Transform camTransform;

void Awake(){  
camTransform = Camera.main.transform;
}

void Start(){  
StartCoroutine(shakeCamHandler(10,3));
}

IEnumerator shakeCamHandler(int amount, int val){  

Vector3 cashedPos = camTransform.position;

for(int i=0;i<amount;i++){  

camTransform.position = new Vector3(cashedPos.x+Random.Range(-val,val),cashedPos.y+Random.Range(-val,val),cashedPos.z+Random.Range(-val,val));
yield return new WaitForSeconds(.05f);
}

camTransform.position = cashedPos;

}

#pragma strict
var GlobalVarsS: GameObject;
var GlobalHealth: GlobalVars;

function Start () {
GlobalVarsS = GameObject.Find("GlobalVars");
GlobalHealth = GlobalVarsS.GetComponent(GlobalVars);
}

function OnTriggerStay (other : Collider) {
    if (other.gameObject.tag=="Player") {
       Destroy(gameObject);
       if (GlobalHealth.Health>=25) {
        GlobalHealth.Health-=25;
        }
        else    
         {GlobalHealth.Health=0;}    
        }
       else {Destroy(gameObject);}
      }
         
function Update() {
gameObject.transform.position = gameObject.transform.position + gameObject.transform.TransformDirection (Vector3.forward/6);     
}

    if(transform.position.x >= 23)
   {
    transform.position.x = 23;
   }

Со вторым с горем пополам разобрался. Вообще идиотизм(System.Convert.ToInt32), эти скриптовые языки порой кривые до ужаса...