If you own a copy of Batman: Arkham City on Xbox 360, you are in luck. Irritated that you never got all of those sweet downloadable costumes at launch? I have a code that will unlock all of them! I will post it in a few hours around 2:00. It's first come first serve, so good luck!
So here's the code: 2WJWY-CK2VC-XJJ67-FQC9K-TGMTZ