Perform the tasks listed below to unlock new costumes.

Blackest Night – You must play the multiplayer mode and earn prestige.
Dark Knight – You must finish all of the Dark Knight challenges.
Injustice – You must play Challenge mode and earn all of the medals.
New 52 Graphic – You must find and capture every “Most Wanted” target.
Noel – You must locate all of the Enigma Datapacks. This is also a part of the New Millennium Pack, which can be purchased.
One Million (free DLC) – You must register a WBID account and link it to your game.
Batman Earth 2 – This is part of the Batman Legends Pack, a preorder bonus from Walmart in the United States and JB Hi-Fi in Australia.
Batman ThrillKiller – This is part of the Batman Legends Pack, a preorder bonus from Walmart in the United States and JB Hi-Fi in Australia. It is also part of the Infinite Earths Pack, which can be purchased.
Dark Knight Of The Round Table – This is part of the Batman Legends Pack, a preorder bonus from Walmart in the United States and JB Hi-Fi in Australia. It is also part of the Infinite Earths Pack, which can be purchased.
The Long Halloween – This is part of the Batman Legends Pack, a preorder bonus from Walmart in the United States and JB Hi-Fi in Australia. It is also part of the Infinite Earths Pack, which can be purchased.
Deathstroke – This was a preorder bonus from Amazon, Best Buy, Gamestop, Target, and Walmart, and can also be purchased.
Classic Tim Drake Robin (1989-2006) – This is part of the Infinite Earths Pack, which can be purchased.
Earth-2 Bruce Wayne – This is part of the Infinite Earths Pack, which can be purchased.
Earth-2 New – This is part of the Infinite Earths Pack, which can be purchased.
Adam West Batman – This is part of the Knightfall Pack, which is currently only available for preorders of the PS3 version of the game.
Knightfall Batman – This is part of the Knightfall Pack, which is currently only available for preorders of the PS3 version of the game.
Blackest Night 2006-2008 Tim Drake Robin – This is part of the New Millennium Pack, which can be purchased.
First Appearance 1939 – This is part of the New Millennium Pack, which can be purchased.
New 52 – This is part of the New Millennium Pack, which can be purchased.
Red Son – This is part of the New Millennium Pack, which can be purchased.