Batcave DLC

If you played Batman Arkham City and have been playing the challenge maps with Robin or Nightwing . Now they are coming out with more. On December 20th, they are releasing the bat cave DLC. But hat is not all if you preorder or got it at gamestop you got the ice berg lounge and the joker's carnival DLC will also be release for the people who did not get those DLC's when buy the game.