diff --git a/src/CiselnaVyprava/Components/BattleArena.razor b/src/CiselnaVyprava/Components/BattleArena.razor
index 9c54d1d..3be999a 100644
--- a/src/CiselnaVyprava/Components/BattleArena.razor
+++ b/src/CiselnaVyprava/Components/BattleArena.razor
@@ -1,5 +1,6 @@
 @inject IGameDataLoader DataLoader
 @inject IBattleEngine BattleEngine
+@implements IDisposable
 
 <div class="battle-arena-wrapper" tabindex="0" @onkeydown="HandleKeyDown" @ref="arenaElement">
     <!-- Top HUD / Level Info -->
@@ -88,7 +89,7 @@
         {
             <div class="equation-box @(State.IsDefensePhase ? "defense-glow" : "attack-glow")">
                 <span class="equation-title">
-                    @(State.IsDefensePhase ? "🛡️ OBRANNÝ TEST: Vyber správnu odpoveď!" : "⚔️ VYPOČÍTAJ A ZAÚTOČ:")
+                    @(State.IsDefensePhase ? "🛡️ ZÁCHRANNÁ OBRANA: Vyrieš náročnú výzvu a aktivuj štít!" : "⚔️ VYPOČÍTAJ A ZAÚTOČ:")
                 </span>
                 <h1 class="equation-text">@State.CurrentProblem.QuestionText</h1>
             </div>
@@ -213,10 +214,29 @@
     private double RemainingTimeSeconds { get; set; } = 6.0;
 
     private Level? NextLevel => DataLoader.GetNextLevel(PlayerGrade, CurrentLevel.Id);
+    private string? _loadedLevelId;
 
     protected override void OnInitialized()
     {
-        StartBattle();
+        if (CurrentLevel != null && !string.IsNullOrEmpty(CurrentLevel.Id))
+        {
+            _loadedLevelId = CurrentLevel.Id;
+            StartBattle();
+        }
+    }
+
+    protected override void OnParametersSet()
+    {
+        if (CurrentLevel != null && !string.IsNullOrEmpty(CurrentLevel.Id) && CurrentLevel.Id != _loadedLevelId)
+        {
+            _loadedLevelId = CurrentLevel.Id;
+            StartBattle();
+        }
+    }
+
+    public void Dispose()
+    {
+        _timer?.Dispose();
     }
 
     private void StartBattle()
@@ -407,6 +427,16 @@
                 return;
             }
 
+            if (e.Key is "<" or "=" or ">")
+            {
+                var match = State.CurrentProblem.Choices.FirstOrDefault(c => c == e.Key);
+                if (match != null)
+                {
+                    await HandleChoiceSelected(match);
+                    return;
+                }
+            }
+
             if (e.Key.Equals("a", StringComparison.OrdinalIgnoreCase) || e.Key.Equals("y", StringComparison.OrdinalIgnoreCase))
             {
                 var match = State.CurrentProblem.Choices.FirstOrDefault(c => c.StartsWith("Á", StringComparison.OrdinalIgnoreCase) || c.StartsWith("A", StringComparison.OrdinalIgnoreCase));
diff --git a/src/CiselnaVyprava/Pages/Home.razor b/src/CiselnaVyprava/Pages/Home.razor
index af98ba8..fce2616 100644
--- a/src/CiselnaVyprava/Pages/Home.razor
+++ b/src/CiselnaVyprava/Pages/Home.razor
@@ -39,7 +39,8 @@
         var currentWorld = worlds.FirstOrDefault(w => w.Levels.Any(l => l.Id == SelectedLevel.Id));
         var bg = currentWorld?.Background ?? "assets/images/backgrounds/world1_meadow.jpg";
 
-        <BattleArena Hero="hero" 
+        <BattleArena @key="SelectedLevel.Id"
+                     Hero="hero" 
                      CurrentLevel="SelectedLevel" 
                      PlayerGrade="Profile.SelectedGrade"
                      BackgroundImage="@bg"
@@ -154,9 +155,12 @@
 
     private void UnlockNextLevel(Level completedLevel)
     {
-        Profile.CompletedLevels.Add(completedLevel.Id);
-        Profile.TotalStars += completedLevel.IsBoss ? 3 : 1;
-        Profile.Gold += completedLevel.IsBoss ? 50 : 20;
+        bool isFirstTime = Profile.CompletedLevels.Add(completedLevel.Id);
+        if (isFirstTime)
+        {
+            Profile.TotalStars += completedLevel.IsBoss ? 3 : 1;
+            Profile.Gold += completedLevel.IsBoss ? 50 : 20;
+        }
 
         var worlds = DataLoader.GetWorldsForGrade(Profile.SelectedGrade);
         var currentWorld = worlds.FirstOrDefault(w => w.Levels.Any(l => l.Id == completedLevel.Id));
diff --git a/src/CiselnaVyprava/Services/BattleEngine.cs b/src/CiselnaVyprava/Services/BattleEngine.cs
index db727d2..49331d1 100644
--- a/src/CiselnaVyprava/Services/BattleEngine.cs
+++ b/src/CiselnaVyprava/Services/BattleEngine.cs
@@ -51,7 +51,7 @@ public class BattleEngine : IBattleEngine
 
     public void NextProblem()
     {
-        State.CurrentProblem = _mathGenerator.GenerateProblem(State.CurrentLevel.MathConfig);
+        State.CurrentProblem = _mathGenerator.GenerateProblem(State.CurrentLevel.MathConfig, State.EnemyHpPhase);
         State.ProblemStartTime = DateTime.UtcNow;
         State.IsDefensePhase = false;
         State.PlayerPose = CombatPose.Idle;
@@ -117,9 +117,7 @@ public class BattleEngine : IBattleEngine
             State.EnemyPose = CombatPose.Attack;
             State.IsDefensePhase = true;
             State.LastResult = CombatResultType.PlayerMissed;
-            State.LastFeedbackMessage = $"❌ Vedľa! Pozor na protiútok! Aktivuj štít!";
-
-            State.CurrentProblem = _mathGenerator.GenerateDefenseTest();
+            State.CurrentProblem = _mathGenerator.GenerateDefenseTest(State.CurrentLevel.MathConfig);
             State.ProblemStartTime = DateTime.UtcNow;
 
             return CombatResultType.PlayerMissed;
diff --git a/src/CiselnaVyprava/Services/MathProblemGenerator.cs b/src/CiselnaVyprava/Services/MathProblemGenerator.cs
index 9035bc4..d896d7c 100644
--- a/src/CiselnaVyprava/Services/MathProblemGenerator.cs
+++ b/src/CiselnaVyprava/Services/MathProblemGenerator.cs
@@ -4,41 +4,99 @@ namespace CiselnaVyprava.Services;
 
 public interface IMathProblemGenerator
 {
-    MathProblem GenerateProblem(MathConfig config);
-    MathProblem GenerateDefenseTest();
+    MathProblem GenerateProblem(MathConfig config, int hpPhase = 1);
+    MathProblem GenerateDefenseTest(MathConfig config);
 }
 
 public class MathProblemGenerator : IMathProblemGenerator
 {
     private readonly Random _rand = new();
 
-    public MathProblem GenerateProblem(MathConfig config)
+    public MathProblem GenerateProblem(MathConfig config, int hpPhase = 1)
     {
         var op = config.Operations[_rand.Next(config.Operations.Count)];
 
         return op switch
         {
-            "+" => GenerateAddition(config),
-            "-" => GenerateSubtraction(config),
-            "*" => GenerateMultiplication(config),
-            "/" => GenerateDivision(config),
-            "<" or ">" or "=" => GenerateComparison(config),
-            _ => GenerateAddition(config)
+            "+" => GenerateAddition(config, hpPhase),
+            "-" => GenerateSubtraction(config, hpPhase),
+            "*" => GenerateMultiplication(config, hpPhase),
+            "/" => GenerateDivision(config, hpPhase),
+            "<" or ">" or "=" => GenerateComparison(config, hpPhase),
+            _ => GenerateAddition(config, hpPhase)
         };
     }
 
-    private MathProblem GenerateAddition(MathConfig config)
+    private MathProblem GenerateAddition(MathConfig config, int hpPhase)
     {
+        // Phase 4: Possibility of 3-term chain or climax numbers
+        if (hpPhase >= 4 && _rand.Next(3) == 0 && config.MaxSum >= 10)
+        {
+            int c1 = Math.Max(1, config.MinA);
+            int c2 = Math.Max(1, config.MinB);
+            int maxPart = Math.Max(2, config.MaxSum / 3);
+            int a3 = _rand.Next(c1, maxPart + 1);
+            int b3 = _rand.Next(c2, Math.Min(config.MaxB, config.MaxSum - a3 - 1) + 1);
+            int c3 = _rand.Next(1, Math.Min(config.MaxB, config.MaxSum - a3 - b3) + 1);
+            int sum3 = a3 + b3 + c3;
+
+            var chainProblem = new MathProblem
+            {
+                DisplayA = $"{a3} + {b3} + {c3}",
+                Operation = "+",
+                DisplayB = "",
+                CorrectAnswer = sum3.ToString(),
+                QuestionText = $"{a3} + {b3} + {c3} = ?",
+                InputType = config.InputType
+            };
+            if (config.InputType == "MultipleChoice")
+            {
+                chainProblem.Choices = GenerateNumericChoices(sum3, 1, config.MaxSum);
+            }
+            return chainProblem;
+        }
+
         int a, b;
+        int minA = config.MinA;
+        int maxA = config.MaxA;
+        int minB = config.MinB;
+        int maxB = config.MaxB;
+
+        // Scale difficulty by phase
+        if (hpPhase == 1)
+        {
+            maxA = Math.Max(minA, minA + (maxA - minA) / 2);
+            maxB = Math.Max(minB, minB + (maxB - minB) / 2);
+        }
+        else if (hpPhase >= 3)
+        {
+            minA = Math.Min(maxA, minA + (maxA - minA) / 3);
+            minB = Math.Min(maxB, minB + (maxB - minB) / 3);
+        }
+
         if (config.AllowCarryOver)
         {
-            a = _rand.Next(config.MinA, config.MaxA + 1);
-            b = _rand.Next(config.MinB, Math.Min(config.MaxB, config.MaxSum - a) + 1);
+            a = _rand.Next(minA, maxA + 1);
+            int remainingMax = Math.Min(maxB, config.MaxSum - a);
+            b = _rand.Next(minB, Math.Max(minB, remainingMax) + 1);
+
+            // In Phase 3-4, prefer carry over (sum of units >= 10) if possible
+            if (hpPhase >= 3 && config.MaxSum >= 20)
+            {
+                int tries = 0;
+                while ((a % 10 + b % 10 < 10) && tries < 15)
+                {
+                    tries++;
+                    a = _rand.Next(minA, maxA + 1);
+                    remainingMax = Math.Min(maxB, config.MaxSum - a);
+                    b = _rand.Next(minB, Math.Max(minB, remainingMax) + 1);
+                }
+            }
         }
         else
         {
-            a = _rand.Next(config.MinA, config.MaxA + 1);
-            b = _rand.Next(config.MinB, config.MaxB + 1);
+            a = _rand.Next(minA, maxA + 1);
+            b = _rand.Next(minB, maxB + 1);
         }
 
         int sum = a + b;
@@ -60,10 +118,63 @@ public class MathProblemGenerator : IMathProblemGenerator
         return problem;
     }
 
-    private MathProblem GenerateSubtraction(MathConfig config)
+    private MathProblem GenerateSubtraction(MathConfig config, int hpPhase)
     {
-        int b = _rand.Next(config.MinB, config.MaxB + 1);
-        int a = _rand.Next(Math.Max(b, config.MinA), config.MaxA + 1);
+        // Phase 4: Possibility of 3-term mixed chain
+        if (hpPhase >= 4 && _rand.Next(3) == 0 && config.MaxA >= 15)
+        {
+            int a3 = _rand.Next(Math.Max(10, config.MinA), config.MaxA + 1);
+            int b3 = _rand.Next(2, Math.Max(3, a3 / 2));
+            int c3 = _rand.Next(1, 6);
+            int res3 = a3 - b3 + c3;
+
+            var chainProblem = new MathProblem
+            {
+                DisplayA = $"{a3} - {b3} + {c3}",
+                Operation = "-",
+                DisplayB = "",
+                CorrectAnswer = res3.ToString(),
+                QuestionText = $"{a3} - {b3} + {c3} = ?",
+                InputType = config.InputType
+            };
+            if (config.InputType == "MultipleChoice")
+            {
+                chainProblem.Choices = GenerateNumericChoices(res3, 0, config.MaxA + 10);
+            }
+            return chainProblem;
+        }
+
+        int minA = config.MinA;
+        int maxA = config.MaxA;
+        int minB = config.MinB;
+        int maxB = config.MaxB;
+
+        if (hpPhase == 1)
+        {
+            maxA = Math.Max(minA, minA + (maxA - minA) / 2);
+            maxB = Math.Max(minB, minB + (maxB - minB) / 2);
+        }
+        else if (hpPhase >= 3)
+        {
+            minA = Math.Min(maxA, minA + (maxA - minA) / 3);
+            minB = Math.Min(maxB, minB + (maxB - minB) / 3);
+        }
+
+        int b = _rand.Next(minB, maxB + 1);
+        int a = _rand.Next(Math.Max(b, minA), maxA + 1);
+
+        // In Phase 3-4 with carry, prefer crossing ten (e.g., 14 - 8, 32 - 17)
+        if (hpPhase >= 3 && config.AllowCarryOver && config.MaxA >= 15)
+        {
+            int tries = 0;
+            while ((a % 10 >= b % 10) && tries < 15)
+            {
+                tries++;
+                b = _rand.Next(minB, maxB + 1);
+                a = _rand.Next(Math.Max(b, minA), maxA + 1);
+            }
+        }
+
         int diff = a - b;
 
         var problem = new MathProblem
@@ -84,19 +195,34 @@ public class MathProblemGenerator : IMathProblemGenerator
         return problem;
     }
 
-    private MathProblem GenerateMultiplication(MathConfig config)
+    private MathProblem GenerateMultiplication(MathConfig config, int hpPhase)
     {
+        var factors = config.Factors != null && config.Factors.Count > 0 
+            ? new List<int>(config.Factors) 
+            : new List<int> { 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+
         int factorA;
-        if (config.Factors != null && config.Factors.Count > 0)
+        int minMult = config.MinMultiplier;
+        int maxMult = config.MaxMultiplier;
+
+        if (hpPhase == 1)
         {
-            factorA = config.Factors[_rand.Next(config.Factors.Count)];
+            var lowerFactors = factors.Where(f => f <= 5).ToList();
+            factorA = lowerFactors.Any() ? lowerFactors[_rand.Next(lowerFactors.Count)] : factors[_rand.Next(factors.Count)];
+            maxMult = Math.Min(5, config.MaxMultiplier);
+        }
+        else if (hpPhase >= 3)
+        {
+            var upperFactors = factors.Where(f => f >= 6).ToList();
+            factorA = upperFactors.Any() ? upperFactors[_rand.Next(upperFactors.Count)] : factors[_rand.Next(factors.Count)];
+            minMult = Math.Max(5, config.MinMultiplier);
         }
         else
         {
-            factorA = _rand.Next(2, 10);
+            factorA = factors[_rand.Next(factors.Count)];
         }
 
-        int factorB = _rand.Next(config.MinMultiplier, config.MaxMultiplier + 1);
+        int factorB = _rand.Next(minMult, maxMult + 1);
         int product = factorA * factorB;
 
         var problem = new MathProblem
@@ -117,19 +243,34 @@ public class MathProblemGenerator : IMathProblemGenerator
         return problem;
     }
 
-    private MathProblem GenerateDivision(MathConfig config)
+    private MathProblem GenerateDivision(MathConfig config, int hpPhase)
     {
+        var factors = config.Factors != null && config.Factors.Count > 0 
+            ? new List<int>(config.Factors) 
+            : new List<int> { 2, 3, 4, 5, 6, 7, 8, 9, 10 };
+
         int divisor;
-        if (config.Factors != null && config.Factors.Count > 0)
+        int minMult = config.MinMultiplier;
+        int maxMult = config.MaxMultiplier;
+
+        if (hpPhase == 1)
         {
-            divisor = config.Factors[_rand.Next(config.Factors.Count)];
+            var lower = factors.Where(f => f <= 5).ToList();
+            divisor = lower.Any() ? lower[_rand.Next(lower.Count)] : factors[_rand.Next(factors.Count)];
+            maxMult = Math.Min(5, config.MaxMultiplier);
+        }
+        else if (hpPhase >= 3)
+        {
+            var upper = factors.Where(f => f >= 6).ToList();
+            divisor = upper.Any() ? upper[_rand.Next(upper.Count)] : factors[_rand.Next(factors.Count)];
+            minMult = Math.Max(5, config.MinMultiplier);
         }
         else
         {
-            divisor = _rand.Next(2, 10);
+            divisor = factors[_rand.Next(factors.Count)];
         }
 
-        int result = _rand.Next(config.MinMultiplier, config.MaxMultiplier + 1);
+        int result = _rand.Next(minMult, maxMult + 1);
         int dividend = divisor * result;
 
         var problem = new MathProblem
@@ -150,41 +291,370 @@ public class MathProblemGenerator : IMathProblemGenerator
         return problem;
     }
 
-    private MathProblem GenerateComparison(MathConfig config)
+    private MathProblem GenerateComparison(MathConfig config, int hpPhase)
     {
-        int a = _rand.Next(config.MinA, config.MaxA + 1);
-        int b = _rand.Next(config.MinB, config.MaxB + 1);
+        if (hpPhase >= 3)
+        {
+            int a = _rand.Next(config.MinA, config.MaxA + 1);
+            int b = _rand.Next(config.MinB, config.MaxB + 1);
+            int leftVal = a + b;
+            string leftStr = $"{a} + {b}";
 
-        string answer = a < b ? "<" : (a > b ? ">" : "=");
+            int rightVal;
+            string rightStr;
+            if (hpPhase == 3)
+            {
+                rightVal = _rand.Next(Math.Max(1, leftVal - 3), leftVal + 4);
+                rightStr = rightVal.ToString();
+            }
+            else
+            {
+                int c = _rand.Next(config.MinA, config.MaxA + 1);
+                int d = _rand.Next(config.MinB, config.MaxB + 1);
+                rightVal = c + d;
+                rightStr = $"{c} + {d}";
+                if (_rand.Next(3) == 0)
+                {
+                    rightVal = leftVal;
+                    rightStr = $"{a + 1} + {b - 1}";
+                }
+            }
+
+            string comp = leftVal < rightVal ? "<" : (leftVal > rightVal ? ">" : "=");
+
+            return new MathProblem
+            {
+                DisplayA = leftStr,
+                Operation = "?",
+                DisplayB = rightStr,
+                CorrectAnswer = comp,
+                QuestionText = $"{leftStr}   ?   {rightStr}",
+                InputType = "MultipleChoice",
+                Choices = new List<string> { "<", "=", ">" }
+            };
+        }
+
+        int x = _rand.Next(config.MinA, config.MaxA + 1);
+        int y = _rand.Next(config.MinB, config.MaxB + 1);
+
+        if (hpPhase == 2 && _rand.Next(2) == 0)
+        {
+            y = Math.Clamp(x + (_rand.Next(2) == 0 ? 1 : -1), config.MinB, config.MaxB);
+        }
+
+        string answer = x < y ? "<" : (x > y ? ">" : "=");
 
         return new MathProblem
         {
-            DisplayA = a.ToString(),
+            DisplayA = x.ToString(),
             Operation = "?",
-            DisplayB = b.ToString(),
+            DisplayB = y.ToString(),
             CorrectAnswer = answer,
-            QuestionText = $"{a}   ?   {b}",
+            QuestionText = $"{x}   ?   {y}",
             InputType = "MultipleChoice",
             Choices = new List<string> { "<", "=", ">" }
         };
     }
 
-    public MathProblem GenerateDefenseTest()
+    // ========================================================
+    // ADVANCED / CHALLENGING RESCUE DEFENSE CHALLENGES
+    // ========================================================
+    public MathProblem GenerateDefenseTest(MathConfig config)
     {
-        // Simple True/False defense shield challenge
-        int a = _rand.Next(1, 10);
-        int b = _rand.Next(1, 10);
-        bool isCorrect = _rand.Next(2) == 0;
-        int displayedResult = isCorrect ? (a + b) : (a + b + (_rand.Next(2) == 0 ? 1 : -1));
-        if (displayedResult <= 0) displayedResult = a + b + 2;
+        bool hasComparison = config.Operations.Any(o => o is "<" or ">" or "=");
+        bool hasMultDiv = config.Operations.Any(o => o is "*" or "/");
+
+        if (hasComparison)
+        {
+            return GenerateChallengingComparisonDefense(config);
+        }
+        else if (hasMultDiv)
+        {
+            int variant = _rand.Next(3);
+            return variant switch
+            {
+                0 => GenerateMissingFactorDefense(config),
+                1 => GenerateMixedMultAddDefense(config),
+                _ => GenerateTrickyVerificationDefense(config, isMult: true)
+            };
+        }
+        else
+        {
+            int variant = _rand.Next(3);
+            return variant switch
+            {
+                0 => GenerateMissingNumberDefense(config),
+                1 => GenerateThreeTermChainDefense(config),
+                _ => GenerateTrickyVerificationDefense(config, isMult: false)
+            };
+        }
+    }
+
+    private MathProblem GenerateChallengingComparisonDefense(MathConfig config)
+    {
+        // Compare expressions: (a + b) ? (c - d)
+        int valLeft, valRight;
+        string exprLeft, exprRight;
+
+        if (config.MaxA > 100) // Grade 3 large numbers
+        {
+            int a = _rand.Next(10, 50) * 10;
+            int b = _rand.Next(5, 30) * 10;
+            valLeft = a + b;
+            exprLeft = $"{a} + {b}";
+
+            int c = _rand.Next(20, 80) * 10;
+            int d = _rand.Next(5, 25) * 10;
+            valRight = c - d;
+            exprRight = $"{c} - {d}";
+        }
+        else if (config.MaxSum > 20 || config.MaxA > 20) // Grade 2
+        {
+            int a = _rand.Next(10, 45);
+            int b = _rand.Next(5, 30);
+            valLeft = a + b;
+            exprLeft = $"{a} + {b}";
+
+            int c = _rand.Next(30, 80);
+            int d = _rand.Next(5, 25);
+            valRight = c - d;
+            exprRight = $"{c} - {d}";
+        }
+        else // Grade 1
+        {
+            int a = _rand.Next(2, 9);
+            int b = _rand.Next(2, 9);
+            valLeft = a + b;
+            exprLeft = $"{a} + {b}";
+
+            int c = _rand.Next(6, 18);
+            int d = _rand.Next(1, 6);
+            valRight = c - d;
+            exprRight = $"{c} - {d}";
+        }
+
+        // Sometimes create equal expressions
+        if (_rand.Next(3) == 0)
+        {
+            valRight = valLeft;
+            int offset = _rand.Next(1, 8);
+            exprRight = $"{valLeft + offset} - {offset}";
+        }
+
+        string answer = valLeft < valRight ? "<" : (valLeft > valRight ? ">" : "=");
 
         return new MathProblem
         {
-            DisplayA = $"{a} + {b} = {displayedResult}",
+            DisplayA = exprLeft,
+            Operation = "?",
+            DisplayB = exprRight,
+            CorrectAnswer = answer,
+            QuestionText = $"Porovnaj výrazy:\n( {exprLeft} )   ?   ( {exprRight} )",
+            InputType = "MultipleChoice",
+            Choices = new List<string> { "<", "=", ">" },
+            IsDefenseTest = true
+        };
+    }
+
+    private MathProblem GenerateMissingNumberDefense(MathConfig config)
+    {
+        bool isAdd = _rand.Next(2) == 0;
+        int missing, known, result;
+        string equation;
+
+        if (config.MaxSum > 100 || config.MaxA > 100) // Grade 3
+        {
+            known = _rand.Next(10, 50) * 10;
+            missing = _rand.Next(10, 40) * 10;
+            if (isAdd)
+            {
+                result = known + missing;
+                equation = _rand.Next(2) == 0 ? $"{known} + ❓ = {result}" : $"❓ + {known} = {result}";
+            }
+            else
+            {
+                result = known;
+                int total = known + missing;
+                equation = $"{total} - ❓ = {result}";
+            }
+        }
+        else if (config.MaxSum > 20 || config.MaxA > 20) // Grade 2
+        {
+            known = _rand.Next(12, 50);
+            missing = _rand.Next(8, 35);
+            if (isAdd)
+            {
+                result = known + missing;
+                equation = _rand.Next(2) == 0 ? $"{known} + ❓ = {result}" : $"❓ + {known} = {result}";
+            }
+            else
+            {
+                result = known;
+                int total = known + missing;
+                equation = $"{total} - ❓ = {result}";
+            }
+        }
+        else // Grade 1
+        {
+            known = _rand.Next(3, 10);
+            missing = _rand.Next(3, 10);
+            if (isAdd)
+            {
+                result = known + missing;
+                equation = _rand.Next(2) == 0 ? $"{known} + ❓ = {result}" : $"❓ + {known} = {result}";
+            }
+            else
+            {
+                result = known;
+                int total = known + missing;
+                equation = $"{total} - ❓ = {result}";
+            }
+        }
+
+        return new MathProblem
+        {
+            DisplayA = equation,
+            Operation = "",
+            DisplayB = "",
+            CorrectAnswer = missing.ToString(),
+            QuestionText = $"Doplň chýbajúce číslo ❓:\n{equation}",
+            InputType = "MultipleChoice",
+            Choices = GenerateNumericChoices(missing, 1, 1000),
+            IsDefenseTest = true
+        };
+    }
+
+    private MathProblem GenerateThreeTermChainDefense(MathConfig config)
+    {
+        int a, b, c, result;
+        string expr;
+
+        if (config.MaxSum > 100 || config.MaxA > 100) // Grade 3
+        {
+            a = _rand.Next(15, 45) * 10;
+            b = _rand.Next(10, 30) * 10;
+            c = _rand.Next(5, 20) * 10;
+            result = a + b - c;
+            expr = $"{a} + {b} - {c}";
+        }
+        else if (config.MaxSum > 20 || config.MaxA > 20) // Grade 2
+        {
+            a = _rand.Next(15, 50);
+            b = _rand.Next(10, 30);
+            c = _rand.Next(5, 20);
+            result = a + b - c;
+            expr = $"{a} + {b} - {c}";
+        }
+        else // Grade 1
+        {
+            a = _rand.Next(4, 9);
+            b = _rand.Next(3, 8);
+            c = _rand.Next(2, 6);
+            result = a + b - c;
+            expr = $"{a} + {b} - {c}";
+        }
+
+        return new MathProblem
+        {
+            DisplayA = expr,
+            Operation = "",
+            DisplayB = "",
+            CorrectAnswer = result.ToString(),
+            QuestionText = $"Vypočítaj trojčlenný reťazec:\n{expr} = ?",
+            InputType = "MultipleChoice",
+            Choices = GenerateNumericChoices(result, 0, 1000),
+            IsDefenseTest = true
+        };
+    }
+
+    private MathProblem GenerateMissingFactorDefense(MathConfig config)
+    {
+        int factorA;
+        if (config.Factors != null && config.Factors.Count > 0)
+        {
+            factorA = config.Factors[_rand.Next(config.Factors.Count)];
+        }
+        else
+        {
+            factorA = _rand.Next(2, 10);
+        }
+
+        int missing = _rand.Next(2, 10);
+        int product = factorA * missing;
+        bool isDiv = _rand.Next(2) == 0;
+        string equation = isDiv 
+            ? $"{product} ÷ ❓ = {factorA}"
+            : (_rand.Next(2) == 0 ? $"{factorA} × ❓ = {product}" : $"❓ × {factorA} = {product}");
+
+        return new MathProblem
+        {
+            DisplayA = equation,
+            Operation = "",
+            DisplayB = "",
+            CorrectAnswer = missing.ToString(),
+            QuestionText = $"Nájdi neznáme číslo ❓:\n{equation}",
+            InputType = "MultipleChoice",
+            Choices = GenerateNumericChoices(missing, 1, 10),
+            IsDefenseTest = true
+        };
+    }
+
+    private MathProblem GenerateMixedMultAddDefense(MathConfig config)
+    {
+        int f1 = _rand.Next(2, 8);
+        int f2 = _rand.Next(2, 6);
+        int prod = f1 * f2;
+        int add = _rand.Next(4, 16);
+
+        bool isSub = _rand.Next(2) == 0 && prod > add;
+        int result = isSub ? prod - add : prod + add;
+        string expr = isSub ? $"{f1} × {f2} - {add}" : $"{f1} × {f2} + {add}";
+
+        return new MathProblem
+        {
+            DisplayA = expr,
+            Operation = "",
+            DisplayB = "",
+            CorrectAnswer = result.ToString(),
+            QuestionText = $"Kombinovaný výpočet (najprv násob!):\n{expr} = ?",
+            InputType = "MultipleChoice",
+            Choices = GenerateNumericChoices(result, 1, 100),
+            IsDefenseTest = true
+        };
+    }
+
+    private MathProblem GenerateTrickyVerificationDefense(MathConfig config, bool isMult)
+    {
+        bool isCorrect = _rand.Next(2) == 0;
+        string equation;
+
+        if (isMult)
+        {
+            int a = _rand.Next(3, 10);
+            int b = _rand.Next(3, 10);
+            int prod = a * b;
+            int displayed = isCorrect ? prod : (prod + (_rand.Next(2) == 0 ? _rand.Next(1, 4) : -_rand.Next(1, 4)));
+            if (displayed <= 0) displayed = prod + 2;
+            equation = $"{a} × {b} = {displayed}";
+        }
+        else
+        {
+            int a = _rand.Next(15, 45);
+            int b = _rand.Next(15, 45);
+            int sum = a + b;
+            int offset = _rand.Next(2) == 0 ? (_rand.Next(2) == 0 ? 1 : -1) : (_rand.Next(2) == 0 ? 10 : -10);
+            int displayed = isCorrect ? sum : (sum + offset);
+            if (displayed <= 0) displayed = sum + 2;
+            equation = $"{a} + {b} = {displayed}";
+        }
+
+        return new MathProblem
+        {
+            DisplayA = equation,
             Operation = "",
             DisplayB = "",
             CorrectAnswer = isCorrect ? "ÁNO" : "NIE",
-            QuestionText = $"Je to správne?\n{a} + {b} = {displayedResult}",
+            QuestionText = $"Je táto rovnica správna?\n{equation}",
             InputType = "MultipleChoice",
             Choices = new List<string> { "ÁNO", "NIE" },
             IsDefenseTest = true
@@ -194,13 +664,22 @@ public class MathProblemGenerator : IMathProblemGenerator
     private List<string> GenerateNumericChoices(int correct, int min, int max)
     {
         var set = new HashSet<int> { correct };
-        while (set.Count < 3)
+        int tries = 0;
+        while (set.Count < 4 && tries < 30)
         {
-            int offset = _rand.Next(-5, 6);
-            if (offset == 0) offset = 1;
+            tries++;
+            int offset = _rand.Next(-4, 5);
+            if (offset == 0) offset = _rand.Next(2) == 0 ? 1 : -1;
             int candidate = Math.Clamp(correct + offset, min, max);
             set.Add(candidate);
         }
+        int fallback = 1;
+        while (set.Count < 4)
+        {
+            set.Add(Math.Max(min, correct + fallback));
+            fallback++;
+        }
+
         return set.OrderBy(_ => _rand.Next()).Select(x => x.ToString()).ToList();
     }
 }
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_attack_p3.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_attack_p3.png
index 6110b71..5095123 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_defend_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_defend_p1.png
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_defend_p2.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_defend_p2.png
index 69d38d6..39947cf 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_hurt_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_hurt_p1.png
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_idle_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/knight_idle_p1.png
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p1.png
index 6110b71..1d76da3 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p2.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p2.png
index 6110b71..5dc8e20 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p3.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p3.png
index 6110b71..3de7a30 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p4.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_attack_p4.png
index 6110b71..5abb0a0 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_defend_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_defend_p1.png
index 69d38d6..99cbf37 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_defend_p2.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_defend_p2.png
index 69d38d6..9da4cf0 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_defend_p3.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_defend_p3.png
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p1.png
index 7de3dea..e464b03 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p2.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p2.png
index 7de3dea..5fb6808 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p3.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p3.png
index 7de3dea..78f4c6a 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p4.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_hurt_p4.png
index 7de3dea..314a960 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p1.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p1.png
index 7de3dea..ce8229b 100644
Binary files a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p1.png and b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p1.png differ
diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p2.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p2.png
index 7de3dea..76a7c33 100644
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diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p3.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p3.png
index 7de3dea..ba124cf 100644
Binary files a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p3.png and b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p3.png differ
diff --git a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p4.png b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p4.png
index 7de3dea..1fe9a8f 100644
Binary files a/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p4.png and b/src/CiselnaVyprava/wwwroot/assets/images/heroes/mage_idle_p4.png differ
diff --git a/src/CiselnaVyprava/wwwroot/css/app.css b/src/CiselnaVyprava/wwwroot/css/app.css
index a666f19..78e5517 100644
--- a/src/CiselnaVyprava/wwwroot/css/app.css
+++ b/src/CiselnaVyprava/wwwroot/css/app.css
@@ -1513,12 +1513,13 @@ html, body {
 }
 
 .equation-box { margin-bottom: clamp(4px, 0.8vh, 8px); }
-.equation-title { font-size: clamp(0.75rem, 1.6vh, 0.9rem); font-weight: 700; color: #7f8c8d; }
 .equation-text {
-    font-size: clamp(1.6rem, 4vh, 2.4rem);
+    font-size: clamp(1.4rem, 3.6vh, 2.2rem);
     color: #2c3e50;
     margin: 2px 0;
     letter-spacing: 1.5px;
+    white-space: pre-line;
+    line-height: 1.25;
 }
 
 /* KEYPAD */
diff --git a/src/CiselnaVyprava/wwwroot/data/worlds-grade1.json b/src/CiselnaVyprava/wwwroot/data/worlds-grade1.json
index 5d7ac9d..65f948b 100644
--- a/src/CiselnaVyprava/wwwroot/data/worlds-grade1.json
+++ b/src/CiselnaVyprava/wwwroot/data/worlds-grade1.json
@@ -9,27 +9,27 @@
       {
         "id": "1-1-1",
         "levelNumber": 1,
-        "name": "Lúčny Motýlik",
-        "enemy": { "id": "meadow_butterfly", "name": "Lúčny Motýlik", "maxHp": 20, "attackPower": 1, "assetFolder": "assets/images/enemies/goblin" },
+        "name": "Lúčny Škriatok",
+        "enemy": { "id": "meadow_goblin", "name": "Lúčny Škriatok", "maxHp": 25, "attackPower": 1, "assetFolder": "assets/images/enemies/goblin" },
         "mathConfig": { "operations": ["+"], "minA": 1, "maxA": 5, "minB": 1, "maxB": 5, "maxSum": 10, "allowCarryOver": false, "inputType": "DirectInput" },
         "requiredCorrectAnswers": 3
       },
       {
         "id": "1-1-2",
         "levelNumber": 2,
-        "name": "Zvedavý Zajačik",
-        "enemy": { "id": "curious_bunny", "name": "Zvedavý Zajačik", "maxHp": 25, "attackPower": 1, "assetFolder": "assets/images/enemies/slime" },
+        "name": "Zvedavý Slizík",
+        "enemy": { "id": "curious_slime", "name": "Zvedavý Slizík", "maxHp": 32, "attackPower": 1, "assetFolder": "assets/images/enemies/slime" },
         "mathConfig": { "operations": ["+", "-"], "minA": 2, "maxA": 10, "minB": 1, "maxB": 5, "maxSum": 10, "allowCarryOver": false, "inputType": "DirectInput" },
-        "requiredCorrectAnswers": 3
+        "requiredCorrectAnswers": 4
       },
       {
         "id": "1-1-3",
         "levelNumber": 3,
         "name": "Lesný Medveď (Boss)",
         "isBoss": true,
-        "enemy": { "id": "gentle_bear_boss", "name": "Strážca Lúky", "maxHp": 40, "attackPower": 1, "assetFolder": "assets/images/enemies/golem" },
+        "enemy": { "id": "gentle_bear_boss", "name": "Lesný Medveď", "maxHp": 50, "attackPower": 1, "assetFolder": "assets/images/enemies/bear" },
         "mathConfig": { "operations": ["+", "-"], "minA": 3, "maxA": 10, "minB": 1, "maxB": 5, "maxSum": 10, "allowCarryOver": false, "inputType": "DirectInput" },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       }
     ]
   },
@@ -44,17 +44,17 @@
         "id": "1-2-1",
         "levelNumber": 1,
         "name": "Lesný Škriatok",
-        "enemy": { "id": "forest_gnome", "name": "Lesný Škriatok", "maxHp": 30, "attackPower": 1, "assetFolder": "assets/images/enemies/goblin" },
+        "enemy": { "id": "forest_gnome", "name": "Lesný Škriatok", "maxHp": 38, "attackPower": 1, "assetFolder": "assets/images/enemies/goblin" },
         "mathConfig": { "operations": ["+", "-"], "minA": 10, "maxA": 19, "minB": 1, "maxB": 5, "maxSum": 20, "allowCarryOver": false, "inputType": "DirectInput" },
         "requiredCorrectAnswers": 4
       },
       {
         "id": "1-2-2",
         "levelNumber": 2,
-        "name": "Kráľovský Ježko",
-        "enemy": { "id": "royal_hedgehog", "name": "Kráľovský Ježko", "maxHp": 35, "attackPower": 1, "assetFolder": "assets/images/enemies/slime" },
+        "name": "Kráľovský Sliz",
+        "enemy": { "id": "royal_slime_g1", "name": "Kráľovský Sliz", "maxHp": 45, "attackPower": 1, "assetFolder": "assets/images/enemies/slime" },
         "mathConfig": { "operations": ["+", "-"], "minA": 11, "maxA": 19, "minB": 1, "maxB": 8, "maxSum": 20, "allowCarryOver": false, "inputType": "DirectInput" },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       }
     ]
   },
@@ -68,19 +68,19 @@
       {
         "id": "1-3-1",
         "levelNumber": 1,
-        "name": "Vodná Víla",
-        "enemy": { "id": "water_fairy", "name": "Vodná Víla", "maxHp": 30, "attackPower": 1, "assetFolder": "assets/images/enemies/goblin" },
+        "name": "Vodný Škriatok",
+        "enemy": { "id": "water_goblin_g1", "name": "Vodný Škriatok", "maxHp": 38, "attackPower": 1, "assetFolder": "assets/images/enemies/goblin" },
         "mathConfig": { "operations": ["<", ">", "="], "minA": 1, "maxA": 20, "minB": 1, "maxB": 20, "inputType": "MultipleChoice" },
         "requiredCorrectAnswers": 4
       },
       {
         "id": "1-3-2",
         "levelNumber": 2,
-        "name": "Riečny Had (Boss)",
+        "name": "Jazerný Golem (Boss)",
         "isBoss": true,
-        "enemy": { "id": "river_serpent_boss", "name": "Riečny Had", "maxHp": 50, "attackPower": 1, "assetFolder": "assets/images/enemies/golem" },
+        "enemy": { "id": "lake_golem_boss_g1", "name": "Jazerný Golem", "maxHp": 65, "attackPower": 1, "assetFolder": "assets/images/enemies/golem" },
         "mathConfig": { "operations": ["<", ">", "="], "minA": 5, "maxA": 20, "minB": 5, "maxB": 20, "inputType": "MultipleChoice" },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       }
     ]
   },
@@ -94,10 +94,10 @@
       {
         "id": "1-4-1",
         "levelNumber": 1,
-        "name": "Kamenný Strážca",
-        "enemy": { "id": "stone_watcher", "name": "Kamenný Strážca", "maxHp": 35, "attackPower": 1, "assetFolder": "assets/images/enemies/golem" },
+        "name": "Kamenný Golem",
+        "enemy": { "id": "stone_watcher_g1", "name": "Kamenný Golem", "maxHp": 45, "attackPower": 1, "assetFolder": "assets/images/enemies/golem" },
         "mathConfig": { "operations": ["+", "-"], "minA": 10, "maxA": 50, "minB": 10, "maxB": 40, "maxSum": 100, "allowCarryOver": false, "inputType": "DirectInput" },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       }
     ]
   },
@@ -113,9 +113,9 @@
         "levelNumber": 1,
         "name": "Kráľovský Drak (Veľký Boss)",
         "isBoss": true,
-        "enemy": { "id": "king_dragon_boss", "name": "Kráľovský Drak", "maxHp": 60, "attackPower": 1, "assetFolder": "assets/images/enemies/golem" },
+        "enemy": { "id": "king_dragon_boss", "name": "Kráľovský Drak", "maxHp": 75, "attackPower": 1, "assetFolder": "assets/images/enemies/dragon" },
         "mathConfig": { "operations": ["+", "-"], "minA": 5, "maxA": 20, "minB": 1, "maxB": 10, "maxSum": 20, "allowCarryOver": false, "inputType": "DirectInput" },
-        "requiredCorrectAnswers": 6
+        "requiredCorrectAnswers": 7
       }
     ]
   }
diff --git a/src/CiselnaVyprava/wwwroot/data/worlds-grade2.json b/src/CiselnaVyprava/wwwroot/data/worlds-grade2.json
index 5cebdc1..4b13599 100644
--- a/src/CiselnaVyprava/wwwroot/data/worlds-grade2.json
+++ b/src/CiselnaVyprava/wwwroot/data/worlds-grade2.json
@@ -13,7 +13,7 @@
         "enemy": {
           "id": "goblin_apprentice",
           "name": "Škriatok Počtárik",
-          "maxHp": 30,
+          "maxHp": 38,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -27,7 +27,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 3
+        "requiredCorrectAnswers": 4
       },
       {
         "id": "2-1-2",
@@ -36,7 +36,7 @@
         "enemy": {
           "id": "forest_slime",
           "name": "Lesný Slizík",
-          "maxHp": 40,
+          "maxHp": 50,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -50,7 +50,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-1-3",
@@ -60,7 +60,7 @@
         "enemy": {
           "id": "stone_golem_boss",
           "name": "Golem Čísel",
-          "maxHp": 60,
+          "maxHp": 75,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/golem"
         },
@@ -74,7 +74,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       }
     ]
   },
@@ -92,7 +92,7 @@
         "enemy": {
           "id": "forest_goblin_comp",
           "name": "Lesný Goblin",
-          "maxHp": 35,
+          "maxHp": 45,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -104,7 +104,7 @@
           "maxB": 50,
           "inputType": "MultipleChoice"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-2-2",
@@ -113,7 +113,7 @@
         "enemy": {
           "id": "slime_comp_watcher",
           "name": "Slizký Strážca",
-          "maxHp": 40,
+          "maxHp": 50,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -125,19 +125,19 @@
           "maxB": 100,
           "inputType": "MultipleChoice"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-2-3",
         "levelNumber": 3,
-        "name": "Strážca Hvozdu (Boss)",
+        "name": "Lesný Medveď (Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "forest_golem_comp_boss",
-          "name": "Strážca Hvozdu",
-          "maxHp": 55,
+          "id": "forest_bear_comp_boss",
+          "name": "Lesný Medveď",
+          "maxHp": 70,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/bear"
         },
         "mathConfig": {
           "operations": ["<", ">", "="],
@@ -147,7 +147,7 @@
           "maxB": 100,
           "inputType": "MultipleChoice"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       }
     ]
   },
@@ -165,7 +165,7 @@
         "enemy": {
           "id": "river_goblin_easy",
           "name": "Riečny Goblin",
-          "maxHp": 35,
+          "maxHp": 45,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -179,7 +179,7 @@
           "allowCarryOver": false,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-3-2",
@@ -188,7 +188,7 @@
         "enemy": {
           "id": "droplet_slime",
           "name": "Kvapkový Sliz",
-          "maxHp": 45,
+          "maxHp": 55,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -202,7 +202,7 @@
           "allowCarryOver": false,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-3-3",
@@ -212,7 +212,7 @@
         "enemy": {
           "id": "river_golem_boss",
           "name": "Balvanový Netvor",
-          "maxHp": 65,
+          "maxHp": 80,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/golem"
         },
@@ -226,7 +226,7 @@
           "allowCarryOver": false,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 7
       }
     ]
   },
@@ -244,7 +244,7 @@
         "enemy": {
           "id": "mountain_goblin",
           "name": "Horský Goblin",
-          "maxHp": 40,
+          "maxHp": 50,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -258,7 +258,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-4-2",
@@ -267,7 +267,7 @@
         "enemy": {
           "id": "mountain_magic_slime",
           "name": "Magický Horský Sliz",
-          "maxHp": 50,
+          "maxHp": 65,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -281,19 +281,19 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       },
       {
         "id": "2-4-3",
         "levelNumber": 3,
-        "name": "Horský Obor (Boss)",
+        "name": "Horský Medveď (Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "mountain_giant_boss",
-          "name": "Horský Obor",
-          "maxHp": 70,
+          "id": "mountain_bear_boss",
+          "name": "Horský Medveď",
+          "maxHp": 90,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/bear"
         },
         "mathConfig": {
           "operations": ["+", "-"],
@@ -305,7 +305,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 7
       }
     ]
   },
@@ -323,7 +323,7 @@
         "enemy": {
           "id": "castle_guard_goblin",
           "name": "Hradný Strážca",
-          "maxHp": 40,
+          "maxHp": 50,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -334,7 +334,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "2-5-2",
@@ -343,7 +343,7 @@
         "enemy": {
           "id": "royal_castle_slime",
           "name": "Kráľovský Sliz",
-          "maxHp": 50,
+          "maxHp": 65,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -354,19 +354,19 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       },
       {
         "id": "2-5-3",
         "levelNumber": 3,
-        "name": "Veľký Hradný Pán (Finále 2. ročníka)",
+        "name": "Hradný Drak (Veľký Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "castle_lord_boss",
-          "name": "Veľký Hradný Pán",
-          "maxHp": 75,
+          "id": "castle_dragon_boss",
+          "name": "Hradný Drak",
+          "maxHp": 95,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/dragon"
         },
         "mathConfig": {
           "operations": ["*"],
@@ -375,7 +375,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 6
+        "requiredCorrectAnswers": 8
       }
     ]
   }
diff --git a/src/CiselnaVyprava/wwwroot/data/worlds-grade3.json b/src/CiselnaVyprava/wwwroot/data/worlds-grade3.json
index 96bf14f..d89f50d 100644
--- a/src/CiselnaVyprava/wwwroot/data/worlds-grade3.json
+++ b/src/CiselnaVyprava/wwwroot/data/worlds-grade3.json
@@ -13,7 +13,7 @@
         "enemy": {
           "id": "river_sprite_goblin",
           "name": "Riečny Škriatok",
-          "maxHp": 35,
+          "maxHp": 45,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -24,7 +24,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "3-1-2",
@@ -33,7 +33,7 @@
         "enemy": {
           "id": "water_slime_div",
           "name": "Vodný Slizík",
-          "maxHp": 45,
+          "maxHp": 55,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -44,19 +44,19 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "3-1-3",
         "levelNumber": 3,
-        "name": "Jazerný Strážca (Boss)",
+        "name": "Jazerný Drak (Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "lake_golem_boss",
-          "name": "Jazerný Strážca",
-          "maxHp": 65,
+          "id": "lake_dragon_boss",
+          "name": "Jazerný Drak",
+          "maxHp": 80,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/dragon"
         },
         "mathConfig": {
           "operations": ["*", "/"],
@@ -65,7 +65,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 7
       }
     ]
   },
@@ -83,7 +83,7 @@
         "enemy": {
           "id": "forest_dwarf_goblin",
           "name": "Lesný Piadimužík",
-          "maxHp": 40,
+          "maxHp": 50,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -94,7 +94,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "3-2-2",
@@ -103,7 +103,7 @@
         "enemy": {
           "id": "resin_slime_div",
           "name": "Živicový Sliz",
-          "maxHp": 50,
+          "maxHp": 65,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -114,19 +114,19 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       },
       {
         "id": "3-2-3",
         "levelNumber": 3,
-        "name": "Starý Lesný Golem (Boss)",
+        "name": "Starý Lesný Medveď (Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "ancient_forest_golem_boss",
-          "name": "Starý Lesný Golem",
-          "maxHp": 70,
+          "id": "ancient_forest_bear_boss",
+          "name": "Starý Lesný Medveď",
+          "maxHp": 90,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/bear"
         },
         "mathConfig": {
           "operations": ["*", "/"],
@@ -135,7 +135,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 6
+        "requiredCorrectAnswers": 8
       }
     ]
   },
@@ -153,7 +153,7 @@
         "enemy": {
           "id": "cave_goblin_1000",
           "name": "Jaskynný Goblin",
-          "maxHp": 45,
+          "maxHp": 55,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -167,7 +167,7 @@
           "allowCarryOver": false,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "3-3-2",
@@ -176,7 +176,7 @@
         "enemy": {
           "id": "glitter_slime_1000",
           "name": "Trblietavý Sliz",
-          "maxHp": 55,
+          "maxHp": 70,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -190,7 +190,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       },
       {
         "id": "3-3-3",
@@ -200,7 +200,7 @@
         "enemy": {
           "id": "crystal_golem_boss",
           "name": "Kryštálový Golem",
-          "maxHp": 75,
+          "maxHp": 95,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/golem"
         },
@@ -214,7 +214,7 @@
           "allowCarryOver": true,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 6
+        "requiredCorrectAnswers": 8
       }
     ]
   },
@@ -232,7 +232,7 @@
         "enemy": {
           "id": "wind_sprite_goblin",
           "name": "Veterný Škriatok",
-          "maxHp": 40,
+          "maxHp": 50,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -244,7 +244,7 @@
           "maxB": 999,
           "inputType": "MultipleChoice"
         },
-        "requiredCorrectAnswers": 4
+        "requiredCorrectAnswers": 5
       },
       {
         "id": "3-4-2",
@@ -253,7 +253,7 @@
         "enemy": {
           "id": "storm_slime_comp",
           "name": "Búrkový Sliz",
-          "maxHp": 50,
+          "maxHp": 65,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -265,19 +265,19 @@
           "maxB": 1000,
           "inputType": "MultipleChoice"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       },
       {
         "id": "3-4-3",
         "levelNumber": 3,
-        "name": "Hromový Golem (Boss)",
+        "name": "Hromový Medveď (Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "thunder_golem_boss",
-          "name": "Hromový Golem",
-          "maxHp": 75,
+          "id": "thunder_bear_boss",
+          "name": "Hromový Medveď",
+          "maxHp": 95,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/bear"
         },
         "mathConfig": {
           "operations": ["<", ">", "="],
@@ -287,7 +287,7 @@
           "maxB": 1000,
           "inputType": "MultipleChoice"
         },
-        "requiredCorrectAnswers": 6
+        "requiredCorrectAnswers": 8
       }
     ]
   },
@@ -305,7 +305,7 @@
         "enemy": {
           "id": "elite_guard_goblin",
           "name": "Elitný Goblin",
-          "maxHp": 50,
+          "maxHp": 65,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/goblin"
         },
@@ -316,7 +316,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 5
+        "requiredCorrectAnswers": 6
       },
       {
         "id": "3-5-2",
@@ -325,7 +325,7 @@
         "enemy": {
           "id": "plasma_slime_boss",
           "name": "Magický Plazmový Sliz",
-          "maxHp": 65,
+          "maxHp": 80,
           "attackPower": 1,
           "assetFolder": "assets/images/enemies/slime"
         },
@@ -341,19 +341,19 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 6
+        "requiredCorrectAnswers": 7
       },
       {
         "id": "3-5-3",
         "levelNumber": 3,
-        "name": "Arcimág Čísel (Záverečný Boss)",
+        "name": "Zlatý Drak Kráľovstva (Záverečný Boss)",
         "isBoss": true,
         "enemy": {
-          "id": "archmage_golem_final_boss",
-          "name": "Arcimág Čísel",
-          "maxHp": 85,
+          "id": "golden_dragon_final_boss",
+          "name": "Zlatý Drak Kráľovstva",
+          "maxHp": 110,
           "attackPower": 1,
-          "assetFolder": "assets/images/enemies/golem"
+          "assetFolder": "assets/images/enemies/dragon"
         },
         "mathConfig": {
           "operations": ["+", "-", "*", "/"],
@@ -367,7 +367,7 @@
           "maxMultiplier": 10,
           "inputType": "DirectInput"
         },
-        "requiredCorrectAnswers": 8
+        "requiredCorrectAnswers": 10
       }
     ]
   }