Solve every riddle on the island
Unlocked: 16 May 2010 14:09:55
Solve Arkham's biggest mystery
Unlocked: 16 May 2010 02:51:23
Bigger Bang
50Complete story mode on Normal difficulty
Unlocked: 14 May 2010 17:57:53
Big Bang
50Complete story mode on Easy difficulty
Unlocked: 14 May 2010 17:57:52
Party Pooper
10Time to break up this party
Unlocked: 14 May 2010 17:05:58
Catch!
5Catch a Batarang (any play mode)
Unlocked: 14 May 2010 17:03:27
Solve 85% of Riddler challenges
Unlocked: 14 May 2010 15:05:08
Defeat the giant Titan Ivy plant
Unlocked: 14 May 2010 14:00:46
Ride a beast and unleash its power
Unlocked: 13 May 2010 13:01:59
Solve 70% of Riddler challenges
Unlocked: 12 May 2010 15:35:36
Venture into Killer Croc's lair and come out alive
Unlocked: 12 May 2010 15:11:29
Conquer the effects of the Scarecrow's fear gas
Unlocked: 09 May 2010 09:00:57
Defeat two Titan Henchmen at once
Unlocked: 09 May 2010 07:02:21
Solve 55% of Riddler challenges
Unlocked: 09 May 2010 06:07:38
Glide continuously for over 100m
Unlocked: 09 May 2010 04:41:05
Solve 40% of Riddler challenges
Unlocked: 08 May 2010 04:54:17
Capture and lock up Harley Quinn
Unlocked: 08 May 2010 04:44:23
Save Dr. Young from being killed by Victor Zsasz
Unlocked: 28 Apr 2010 14:04:52
Face your biggest fears and keep your sanity
Unlocked: 28 Apr 2010 13:48:56
Solve 25% of Riddler challenges
Unlocked: 28 Apr 2010 13:16:26
Complete a combo of 20 moves (any play mode)
Unlocked: 28 Mar 2010 07:30:51
Gain access to Arkham Mansion after it is locked down by the Joker
Unlocked: 28 Mar 2010 07:24:21
Defeat Bane
Unlocked: 28 Mar 2010 06:12:54
Survive the nightmare of the Scarecrow's fear gas
Unlocked: 27 Mar 2010 03:43:28
Save all the doctors in Medical
Unlocked: 27 Mar 2010 03:21:36
Complete a combo of 10 moves (any play mode)
Unlocked: 27 Mar 2010 03:08:25
Solve 10% of Riddler challenges
Unlocked: 26 Mar 2010 14:08:48
Solve 5% of Riddler challenges
Unlocked: 26 Mar 2010 13:40:15
Escape from Intensive Treatment to the island surface
Unlocked: 26 Mar 2010 13:37:54
Survive the onslaught from the deformed Joker henchman
Unlocked: 26 Mar 2010 12:39:21
Complete a combo of 5 moves (any play mode)
Unlocked: 26 Mar 2010 12:33:44
Rescue the guards and henchman from the Joker toxin in Decontamination
Unlocked: 26 Mar 2010 12:28:44
Take down Zsasz in the Patient Pacification Chamber
Unlocked: 26 Mar 2010 12:19:10
Biggest Bang
50Complete story mode on Hard difficulty
Complete a combo of 40 moves (any play mode)
String up one henchman and drop him to surprise a second (any play mode)
Mano-A-Mano
10Take on a beast in hand to hand combat
Perform a perfect combo including all of Batman's combat moves (any play mode)
Achieve 8 medals on combat challenges
Achieve 16 medals on combat challenges
Achieve 24 medals on combat challenges
Achieve 8 medals on predator challenges
Achieve 16 medals on predator challenges
Achieve 24 medals on predator challenges
Complete one predator challenge by using only Silent Takedowns and without being detected
Complete one combat challenge without taking damage
100% Complete