Couple PlayerUpgrade with Player

Assets/Scripts/src/Base/EnemyBase.cs

@@ -65,7 +65,7 @@ namespace src.Base
             Collider2D.enabled = false;
             _isDead = true;
             Animator.SetTrigger(AnimExplode);
-            Destroy(gameObject, 1);
+            Destroy(gameObject, 0.7f);
         }
 
         public void OnCollisionEnter2D(Collision2D col)

Assets/Scripts/src/Base/UpgradeBase.cs

@@ -1,5 +1,7 @@
 using src.Interfaces;
 using src.Managers;
+using src.Player;
+using src.Upgrade;
 using UnityEngine;
 
 namespace src.Base
@@ -8,6 +10,7 @@ namespace src.Base
     {
         protected GameManager gameManager;
         private UpgradeManager _upgradeManager;
+        protected PlayerController _playerToUpgrade;
 
         public void Start()
         {
@@ -23,6 +26,7 @@ namespace src.Base
         public void OnTriggerEnter2D(Collider2D other)
         {
             if (!other.CompareTag("Player")) return;
+            _playerToUpgrade = other.GetComponent<PlayerController>();
             PerformUpgrade();
             _upgradeManager.ClaimUpgrade(gameObject);
             Destroy(gameObject);

Assets/Scripts/src/Managers/GameManager.cs

@@ -37,7 +37,6 @@ namespace src.Managers
             _gameStateManager = gameObject.AddComponent<GameStateManager>();
             _levelManager = gameObject.AddComponent<LevelManager>();
             _upgradeManager = gameObject.AddComponent<UpgradeManager>();
-            gameObject.AddComponent<PlayerUpgrade>();
 
             // Load external components
             _playerController = GameObject.Find("Player").GetComponent<PlayerController>();

Assets/Scripts/src/Player/PlayerController.cs

@@ -31,10 +31,14 @@ namespace src.Player
         private static readonly int AnimDeath = Animator.StringToHash("AnimDeath");
 
 
+        protected void Awake()
+        {
+            _playerUpgrade = gameObject.AddComponent<PlayerUpgrade>();
+        }
+
         protected void Start()
         {   
             _gameStateManager = GameStateManager.instance;
-            _playerUpgrade = PlayerUpgrade.instance;
             _bombsUtil = BombsUtilManager.instance;
 
             _rigidbody2d = GetComponent<Rigidbody2D>();

Assets/Scripts/src/Player/PlayerUpgrade.cs

@@ -4,24 +4,14 @@ namespace src.Player
 {
     public class PlayerUpgrade : GameplayComponent
     {
+        /* Events & Delegates */
         public delegate void IncreaseSpeedDelegate(float speed);
-        public static PlayerUpgrade instance;
         public event IncreaseSpeedDelegate PlayerSpeed;
+        
+        /* Variables */
         public const float MaxPlayerSpeed = 8f;
         private float _movementSpeed = 4f;
 
-        public void Awake()
-        {
-            if (instance == null)
-            {
-                instance = this;
-            }
-            else if (instance != null)
-            {
-                Destroy(gameObject);
-            }
-        }
-
         public float GetMovementSpeed()
         {
             return _movementSpeed;

Assets/Scripts/src/Upgrade/PlayerSpeedUpgrade.cs

@@ -7,7 +7,7 @@ namespace src.Upgrade
     {
         public override void PerformUpgrade()
         {
-            var player = PlayerUpgrade.instance;
+            var player = _playerToUpgrade.GetComponent<PlayerUpgrade>();
             player.IncreaseSpeed(.5f);
         }
     }