Anybody find any secrets or easter eggs in Harley's Revenge yet? I already discovered all of the pregnancy tests, the crypto messages (that I have yet to decode), and the Gordon comment. I also found a window that's not in the main game that looks like it could go somewhere.
Right by the large gate where you put Harley's key codes in to get into the actual DLC area, there's a building on the left. If you fly on top there's a window looking down into a random room. You can see through it very clearly, but I haven't been able to find a way to get in. Anybody know anything about it?