Implement enemies getting to a finish, enemy dying

Assets/Scripts/Managers/LevelManager.cs

@@ -0,0 +1,39 @@
+using Sirenix.OdinInspector;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+
+public class LevelManager : MonoBehaviour
+{
+    [SerializeField]
+    private Level level;
+
+    [SerializeField]
+    [ReadOnly]
+    private int health = 0;
+
+    [SerializeField]
+    private HashSet<EnemyComponent> finishedEnemies = new HashSet<EnemyComponent>();
+
+    private void Start()
+    {
+        health = level.health;
+    }
+
+    public void OnEnemyReachedFinish(Collider enemyCollider)
+    {
+        var enemy = enemyCollider
+            .gameObject
+            .GetComponentInParent<EnemyComponent>();
+
+        if (finishedEnemies.Contains(enemy))
+        {
+            return;
+        }
+
+        finishedEnemies.Add(enemy);
+        enemy.Destroy();
+        health--;
+    }
+}