Finished tutorial

Assets/Scripts/ObjectHit.cs

@@ -2,12 +2,14 @@ using UnityEngine;
 
 public class ObjectHit : MonoBehaviour
 {
+    [SerializeField] int damageAmount = 10;
     private void OnCollisionEnter(Collision other)
     {
-        if (other.gameObject.tag == "Player")
+        if (other.gameObject.tag == "Player" && gameObject.tag != "Hit")
         {
             GetComponent<MeshRenderer>().material.color = Color.black;
             gameObject.tag = "Hit";
+            other.gameObject.GetComponent<PlayerStats>().TakeDamage(damageAmount);
         }
     }
 }