Batman Arkham Origins released today on Xbox 360, PS3, Wii U and PC, and like each of the past series entries, this one's jam-packed with easter eggs and secrets. We've already discovered the game's hidden alternate costumes, however, so we're going to tell you how to unlock them all. 

And you say we never do anything nice for you.

• Dark Knight Costume - Beat every Dark Knight Challenge
• Injustice Costume - Master Challenge Mode
• Noel Costume - Defeat Enigma
• New 52 Costume - Capture all of the GCPD's Most Wanted
• Blackest Night Costume - Prestige in multiplayer
• One Million Costume - Register a WBID
• Knightfall Costume - Pre-order for PS3
• New Millenium Costumes - Buy New Millenium DLC pack (5 costumes for Batman)
• Infinite Earths Costumes - BuyInfinite Earths DLC pack (5 costumes for Batman)

For more Batman Arkham Origins, check out our PS3 review.