Complete each achievement to receive the allotted gamerscore.
| Unlockable: | How to unlock: |
| Big Bang (50) | Complete story mode on Easy difficulty |
| Bigger Bang (50) | Complete story mode on Normal difficulty |
| Biggest Bang (50) | Complete story mode on Hard difficulty |
| Party Pooper (10) | Time to break up this party |
| Freeflow Combo 20 (10) | Complete a combo of 20 moves (any play mode) |
| Freeflow Combo 40 (10) | Complete a combo of 40 moves (any play mode) |
| Night Glider (5) | Glide continuously for over 100m |
| Rope-A-Dope-A-Dope (10) | String up one henchman and drop him to surprise a second (any play mode) |
| Mano-A-Mano (10) | Take on a beast in hand to hand combat |
| Catch! (5) | Catch a Batarang (any play mode) |
| Freeflow Combo 5 (5) | Complete a combo of 5 moves (any play mode) |
| Freeflow Combo 10 (5) | Complete a combo of 10 moves (any play mode) |
| Freeflow Perfection (10) | Perform a perfect combo including all of Batman's combat moves (any play mode) |
| Freakshow Rodeo (10) | Ride a beast and unleash its power |
| Freeflow Bronze (10) | Achieve 8 medals on combat challenges |
| Freeflow Silver (25) | Achieve 16 medals on combat challenges |
| Freeflow Gold (50) | Achieve 24 medals on combat challenges |
| Predator Bronze (10) | Achieve 8 medals on predator challenges |
| Predator Silver (25) | Achieve 16 medals on predator challenges |
| Predator Gold (50) | Achieve 24 medals on predator challenges |
| Invisible Predator (10) | Complete one predator challenge by using only Silent Takedowns and without being detected |
| Flawless Freeflow Fighter (10) | Complete one combat challenge without taking damage |
| Crack The E Nigma (20) | Solve every riddle on the island |
| Arkham Analyst (20) | Solve 5% of Riddler challenges |
| Cryptic Investigator (20) | Solve 10% of Riddler challenges |
| Lateral Thinker (20) | Solve 25% of Riddler challenges |
| Mystery Solver (20) | Solve 40% of Riddler challenges |
| Conundrum Cracker (20) | Solve 55% of Riddler challenges |
| Mental Athlete (20) | Solve 70% of Riddler challenges |
| Riddle Resolver (20) | Solve 85% of Riddler challenges |
| World's Greatest Detective (20) | Solve Arkham's biggest mystery |
| Perfect Knight (75) | 100% Complete |
| Shocking Rescue (10) | Take down Zsasz in the Patient Pacification Chamber |
| Leave No Man Behind (10) | Rescue the guards and henchman from the Joker toxin in Decontamination |
| Malpractice Needs More Practice (10) | Survive the onslaught from the deformed Joker henchman |
| Born Free (10) | Escape from Intensive Treatment to the island surface |
| Just What The Doctors Ordered (10) | Save all the doctors in Medical |
| Daydreamer (10) | Survive the nightmare of the Scarecrow's fear gas |
| Baneful Payback (25) | Defeat Bane |
| Breaking And Entering (10) | Gain access to Arkham Mansion after it is locked down by the Joker |
| Recurring Nightmare (10) | Face your biggest fears and keep your sanity |
| Zsasz Cut Down To Size (10) | Save Dr. Young from being killed by Victor Zsasz |
| Solitary Confinement (25) | Capture and lock up Harley Quinn |
| Double Trouble (25) | Defeat two Titan Henchmen at once |
| Resist The Fear (50) | Conquer the effects of the Scarecrow's fear gas |
| Crocodile Tears (50) | Venture into Killer Croc's lair and come out alive |
| Poisoned Ivy (50) | Defeat the giant Titan Ivy plant |
