you have a chance to get UNIQUE weapons at whell of fortune when they reach 3 poops. you can get these rare weapons: sheep cannon and poop launcher (i got these 2 at twice. much lucky)
to get 3 stars against terminator you need to steal kills and let your friends die. when you know that your friend is going to kill terminator, steal that kill. when he is going to die, let he die. and finish his work