| icon | info | score |
|---|---|---|
| Poisoned Ivy Defeat the giant Titan Ivy plant unlocked Dec 21st, 2009 8:51 pm | 50 | |
| Rope-A-Dope-A-Dope String up one henchman and drop him to surprise a second (any play mode) unlocked Dec 21st, 2009 12:17 am | 10 | |
| Mental Athlete Solve 70% of Riddler challenges | 20 | |
| Night Glider Glide continuously for over 100m unlocked Dec 21st, 2009 10:13 pm | 5 | |
| Freeflow Combo 20 Complete a combo of 20 moves (any play mode) | 10 | |
| Freakshow Rodeo Ride Titan henchman and knock down 10 thugs (any play mode) unlocked Dec 21st, 2009 8:29 pm | 10 | |
| Crocodile Tears Venture into Killer Croc's lair and come out alive unlocked Dec 21st, 2009 7:18 pm | 50 | |
| Resist The Fear Conquer the effects of the Scarecrow's fear gas unlocked Dec 21st, 2009 6:46 pm | 50 | |
| Double Trouble Defeat two Titan Henchmen at once unlocked Dec 21st, 2009 5:46 pm | 25 | |
| Conundrum Cracker Solve 55% of Riddler challenges | 20 | |
| Solitary Confinement Capture and lock up Harley Quinn unlocked Dec 21st, 2009 2:11 am | 25 | |
| Mystery Solver Solve 40% of Riddler challenges unlocked Dec 21st, 2009 10:19 pm | 20 | |
| Zsasz Cut Down To Size Save Dr. Young from being killed by Victor Zsasz unlocked Dec 21st, 2009 1:04 am | 10 | |
| Recurring Nightmare Face your biggest fears and keep your sanity unlocked Dec 21st, 2009 12:59 am | 10 | |
| Freeflow Combo 10 Complete a combo of 10 moves (any play mode) unlocked Dec 20th, 2009 11:13 pm | 5 | |
| Breaking And Entering Gain access to Arkham Mansion after it is locked down by the Joker unlocked Dec 20th, 2009 11:44 pm | 10 | |
| Lateral Thinker Solve 25% of Riddler challenges unlocked Dec 21st, 2009 6:12 pm | 20 | |
| Baneful Payback Defeat Bane unlocked Dec 20th, 2009 10:51 pm | 25 | |
| Daydreamer Survive the nightmare of the Scarecrow's fear gas unlocked Dec 20th, 2009 10:34 pm | 10 | |
| Just What The Doctors Ordered Save all the doctors in Medical unlocked Dec 20th, 2009 10:18 pm | 10 | |
| Cryptic Investigator Solve 10% of Riddler challenges unlocked Dec 20th, 2009 11:41 pm | 20 | |
| Arkham Analyst Solve 5% of Riddler challenges unlocked Dec 20th, 2009 10:37 pm | 20 | |
| Born Free Escape from Intensive Treatment to the island surface unlocked Dec 20th, 2009 9:25 pm | 10 | |
| Malpractice Needs More Practice Survive the onslaught from the deformed Joker henchman unlocked Dec 20th, 2009 8:56 pm | 10 | |
| Leave No Man Behind Rescue the guards and henchman from the Joker toxin in Decontamination unlocked Dec 20th, 2009 8:51 pm | 10 | |
| Shocking Rescue Take down Zsasz in the Patient Pacification Chamber unlocked Dec 20th, 2009 8:46 pm | 10 | |
| Freeflow Combo 5 Complete a combo of 5 moves (any play mode) unlocked Dec 20th, 2009 9:11 pm | 5 | |
| Freeflow Bronze Achieve 8 medals on combat challenges | 10 | |
| Flawless Freeflow Fighter Complete one combat challenge without taking damage | 10 | |
| World's Greatest Detective Spirit of Amadeus Arkham revealed | 20 | |
| Crack The E Nigma Solve every riddle on the island | 20 | |
| Riddle Resolver Solve 85% of Riddler challenges | 20 | |
| Bigger Bang Complete story mode on Normal difficulty unlocked Dec 21st, 2009 9:34 pm | 50 | |
| Big Bang Complete story mode on Easy difficulty unlocked Dec 21st, 2009 9:34 pm | 50 | |
| Party Pooper KO all the henchmen celebrating your arrival at the party unlocked Dec 21st, 2009 8:57 pm | 10 | |
| Freeflow Combo 40 Complete a combo of 40 moves (any play mode) | 10 | |
| Catch! Catch a Batarang (any play mode) unlocked Dec 21st, 2009 1:36 am | 5 | |
| Biggest Bang Complete story mode on Hard difficulty | 50 | |
| Invisible Predator Complete one predator challenge by using only Silent Takedowns and without being detected | 10 | |
| Freeflow Perfection Perform a perfect combo including all of Batman's combat moves (any play mode) | 10 | |
| Mano-A-Mano Defeat Titan henchman without using Batarangs (any play mode) | 10 | |
| Perfect Knight 100% Complete | 75 | |
| Freeflow Gold Achieve 24 medals on combat challenges | 50 | |
| Freeflow Silver Achieve 16 medals on combat challenges | 25 | |
| Predator Gold Achieve 24 medals on predator challenges | 50 | |
| Predator Silver Achieve 16 medals on predator challenges | 25 | |
| Predator Bronze Achieve 8 medals on predator challenges | 10 |
