help on several mechanics

Thanks #2 is solved. However, still having an issue with #3. Does both the arrow and the wall need a rigidbody or only one of them? I've applied it both and disabled gravity and drag is set a zero.

Here's the code, maybe I'm missing something:

     void OnCollisionEnter(Collision hit)
     {
         float depth = 0.3f;
         
         if(hit.transform.tag == "Bolt")
         {
             hit.rigidbody.is$$anonymous$$inematic = true; //stop physics
             //hit.transform.Translate(depth * Vector3.forward); //arrow peneration (took it out like you said)
             hit.transform.parent = transform; //attach it to the enemy
         }
     }

This answer might help you with #3:

http://answers.unity3d.com/questions/462907/how-do-i-stop-a-projectile-cold-when-colliding-wit.html

Still no luck despite. Despite trying both methods =S.

$$anonymous$$aybe you want to share your "issue with #3" with us? What exactly happens? Does the arrow move? Does it stop at the target? If so, what's your actual problem...

The people here are quite good at guessing what people want to ask, but out of thin air there's not much we can do ;)

BTW, is the script you posted above on your arrow / bolt? If so it doesn't make much sense to check the object it hit for the tag "bolt". That would make it work only when hitting another bolt. Unless your name is Robin Hood that's a quite rare case :P

To answer you question in the comment above:
Only the moving object (probably the bolt / arrow) needs a Rigid body. However both objects need a collider, the bolt as well as the wall you want to hit.