I have the spoiler for the ending. Spoiler Chuck Norris uses his Norris mind control to stop the Spartan's hand, then roundhouse kicks him
Why is that homeless guy attempting to punch himself with his robot arm? Chuck is the guy who comes in 2 minutes later and kills everything, not this guy.
Whats going to happen is as soon as the fist meets Chuck Norris's nose the spartans arm is going to disappear... (still trying to think of a logical explanation for this).