Добавил новые состояния для игры

Assets/Scripts/AudioManager.cs

@@ -6,6 +6,8 @@ public class AudioManager : MonoBehaviour
     [SerializeField] private GameManager _gameManager;
     [SerializeField] private AudioSource _levelBackgroundMusic;
     [SerializeField] private AudioSource _buildBackgroundMusic;
+    [SerializeField] private AudioSource _winMusic;
+    [SerializeField] private AudioSource _loseMusic;
     [SerializeField] private AudioSource[] _grassBlockDestroySound;
     [SerializeField] private AudioSource[] _moneyChangeSound;
 
@@ -70,6 +72,16 @@ public class AudioManager : MonoBehaviour
                 Stop(_levelBackgroundMusic);
                 Play(_buildBackgroundMusic);
                 break;
+            case GameManager.GameState.Win:
+                Stop(_levelBackgroundMusic);
+                Stop(_buildBackgroundMusic);
+                Play(_winMusic);
+                break;
+            case GameManager.GameState.Lose:
+                Stop(_levelBackgroundMusic);
+                Stop(_buildBackgroundMusic);
+                Play(_loseMusic);
+                break;
         }
     }
 

Assets/Scripts/GameManager.cs

@@ -7,7 +7,9 @@ public class GameManager : MonoBehaviour
     {
         BuildingPath,
         BuildingTurrets,
-        Level
+        Level,
+        Win,
+        Lose
     }
     
     [SerializeField] private Level[] _levels;

Assets/Scripts/WinLoseController.cs

@@ -40,7 +40,10 @@ public class WinLoseController : MonoBehaviour
 
     private void OnLastEnemyDestroyed()
     {
-        if (_isLastLevel)
+        if (!_isLastLevel)
+            return;
+
+        _gameManager.CurrentState = GameManager.GameState.Win;
         _onWin?.Invoke();
     }
 
@@ -52,6 +55,7 @@ public class WinLoseController : MonoBehaviour
 
     private void OnDeath()
     {
+        _gameManager.CurrentState = GameManager.GameState.Lose;
         _onGameOver?.Invoke(new OnGameOverEventArgs(_currentLevel));
     }