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