I'm stuck at the bit after clearing the pumps where joker locks you in a circular room and you have to fight the big henchman inbetween waves of smaller henchman. The big guy comes out of an elevator. My problem is that earlier in the game i made my way into the top of the elevator shaft courtesy of the trainer and accidentally blew one of the walls up which dropped the elevator down and smashed it. Because of that the guy i need to beat up can't leave the elevator cos he's stuck, and i cant get in there to finish him off. Any ideas? Or am i restarting again.