(For more info about the game, check out my review of Batman: Arkham Asylum)
Along with an amazing story the game also offers an addition "Challenge" mode in which Batman (and Armoured Suit Batman after completing the game) get to fight off hordes of foes and silently take down enemies in a handful of challenges.
Within the first week of the game's release, we lucky PS3 owners got our hands on B:AA first DLC- playable Joker content. This opens up a few Challenges that can be played as the Joker.
Recently there have been a few more nuggets of free DLC on the PlayStation Store- more challenges for Batman and Armoured Batman. (Sadly no more levels have been released for Joker, but it's early days yet).
I recently played through all 4 of the new challenges and thought they are definitely worth getting- especially since they're free! The most interesting of the 4 challenges is a new Survival Mode in which you get to fight off an infinite number of bad guys. This is a nice touch to the game, as I always felt that this was one challenge that the game was definitely needing.
The fact that 4 new challenges have been released so quickly can only mean good things for the future of the game. Fingers crossed that the next batch of updates include more Joker content.
-- BIZNITCH --