| icon | info | score |
|---|---|---|
| Poisoned Ivy Defeat the giant Titan Ivy plant unlocked Dec 15th, 2010 6:17 pm | 50 | |
| Rope-A-Dope-A-Dope String up one henchman and drop him to surprise a second (any play mode) unlocked Apr 20th, 2010 6:56 pm | 10 | |
| Mental Athlete Solve 70% of Riddler challenges unlocked Apr 20th, 2010 6:10 pm | 20 | |
| Night Glider Glide continuously for over 100m unlocked Apr 20th, 2010 5:58 pm | 5 | |
| Freeflow Combo 20 Complete a combo of 20 moves (any play mode) unlocked Apr 20th, 2010 4:57 pm | 10 | |
| Freakshow Rodeo Ride Titan henchman and knock down 10 thugs (any play mode) unlocked Apr 20th, 2010 4:27 pm | 10 | |
| Crocodile Tears Venture into Killer Croc's lair and come out alive unlocked Apr 18th, 2010 5:41 pm | 50 | |
| Resist The Fear Conquer the effects of the Scarecrow's fear gas unlocked Mar 12th, 2010 12:42 am | 50 | |
| Double Trouble Defeat two Titan Henchmen at once unlocked Jan 31st, 2010 10:04 pm | 25 | |
| Conundrum Cracker Solve 55% of Riddler challenges unlocked Jan 30th, 2010 9:53 pm | 20 | |
| Solitary Confinement Capture and lock up Harley Quinn unlocked Jan 30th, 2010 8:19 pm | 25 | |
| Mystery Solver Solve 40% of Riddler challenges unlocked Jan 24th, 2010 11:52 pm | 20 | |
| Zsasz Cut Down To Size Save Dr. Young from being killed by Victor Zsasz unlocked Jan 24th, 2010 10:28 pm | 10 | |
| Recurring Nightmare Face your biggest fears and keep your sanity unlocked Jan 24th, 2010 10:18 pm | 10 | |
| Freeflow Combo 10 Complete a combo of 10 moves (any play mode) unlocked Jan 10th, 2010 7:51 pm | 5 | |
| Breaking And Entering Gain access to Arkham Mansion after it is locked down by the Joker unlocked Jan 10th, 2010 7:31 pm | 10 | |
| Lateral Thinker Solve 25% of Riddler challenges unlocked Jan 8th, 2010 11:49 pm | 20 | |
| Baneful Payback Defeat Bane unlocked Jan 8th, 2010 11:07 pm | 25 | |
| Daydreamer Survive the nightmare of the Scarecrow's fear gas unlocked Jan 1st, 2010 2:52 am | 10 | |
| Just What The Doctors Ordered Save all the doctors in Medical unlocked Jan 1st, 2010 2:26 am | 10 | |
| Cryptic Investigator Solve 10% of Riddler challenges unlocked Jan 1st, 2010 12:14 am | 20 | |
| Arkham Analyst Solve 5% of Riddler challenges unlocked Dec 30th, 2009 1:51 am | 20 | |
| Born Free Escape from Intensive Treatment to the island surface unlocked Dec 30th, 2009 1:07 am | 10 | |
| Malpractice Needs More Practice Survive the onslaught from the deformed Joker henchman unlocked Dec 30th, 2009 12:02 am | 10 | |
| Leave No Man Behind Rescue the guards and henchman from the Joker toxin in Decontamination unlocked Dec 29th, 2009 11:49 pm | 10 | |
| Shocking Rescue Take down Zsasz in the Patient Pacification Chamber unlocked Dec 29th, 2009 11:40 pm | 10 | |
| Freeflow Combo 5 Complete a combo of 5 moves (any play mode) unlocked Dec 29th, 2009 11:15 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 | 50 | |
| Big Bang Complete story mode on Easy difficulty | 50 | |
| Party Pooper KO all the henchmen celebrating your arrival at the party | 10 | |
| Freeflow Combo 40 Complete a combo of 40 moves (any play mode) | 10 | |
| Catch! Catch a Batarang (any play mode) | 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 |
