The only way i know how to get in is the south door and once you are in there you cant go anywhere unless you are Batman. I just need the catwoman trophies in here and then i have them all. --- I flew today - Stewie Gamertag: The SB Assassin
Look for the giant flaming hole in the roof; there's a door in there that leads to the office where you first encounter Hammer. In fact, the door's on the map. Somewhere close to the middle of the building. --- You abandoned your friend to die. He's calling for you, while the children spread out his heart to the skies.