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One Smart Cookie Complete one optional tomb.

Bookworm Find 25% of all documents.

Predator Kill 50 enemies with the bow.

Down and Dirty Perform 15 finishers.

Sharp Shooter Perform 50 headshot kills in the single player campaign.

Opportunist Kill 25 unaware enemies.

Relic Hunter Collect 25% of all relics.

Gunslinger Kill 35 enemies with the pistol.

Born Free Escape from Intensive Treatment to the island surface

Scrounger Collect 5000 pieces of salvage.

Freeflow Combo 10 Complete a combo of 10 moves (any play mode)

A Survivor Is Born Complete the game.

Picky Loot 200 enemies.

Arkham Analyst Solve 5% of Riddler challenges

Clever Girl Purchase all skills in one category.

Just What The Doctors Ordered Save all the doctors in Medical

Daydreamer Survive the nightmare of the Scarecrow's fear gas

Cryptic Investigator Solve 10% of Riddler challenges

Baneful Payback Defeat Bane

Looking for Trouble Find 25% of GPS caches.

Epic Fumble Force an enemy to drop dynamite that kills two people when exploding.

Breaking And Entering Gain access to Arkham Mansion after it is locked down by the Joker

Recurring Nightmare Face your biggest fears and keep your sanity

Zsasz Cut Down To Size Save Dr. Young from being killed by Victor Zsasz

Tastes Like Chicken! Kill and loot 10 small animals (rabbits, chickens, rats).

Unfinished Business Complete one challenge.

Solitary Confinement Capture and lock up Harley Quinn

Equalizer Kill 75 enemies with the rifle.

Lateral Thinker Solve 25% of Riddler challenges

Freeflow Combo 20 Complete a combo of 20 moves (any play mode)

Crab Cakes Kill FeeFee the crab.

Double Trouble Defeat two Titan Henchmen at once

Resist The Fear Conquer the effects of the Scarecrow's fear gas

Crocodile Tears Venture into Killer Croc's lair and come out alive

Now We're Getting Serious Fully mod and completely upgrade any weapon.

Freakshow Rodeo Ride Titan henchman and knock down 10 thugs (any play mode)

Poisoned Ivy Defeat the giant Titan Ivy plant

Widowmaker Kill 40 enemies with the shotgun.

Big Bang Complete story mode on Easy difficulty

Historian Find 75% of all documents.

Mystery Solver Solve 40% of Riddler challenges

Intellectually Superior Complete all optional tombs.

Archaeologist Collect 75% of all relics.

Party Pooper KO all the henchmen celebrating your arrival at the party

Bigger Bang Complete story mode on Normal difficulty

Rope-A-Dope-A-Dope String up one henchman and drop him to surprise a second (any play mode)

Feather Duster Kill and loot 10 flying animals (crows and gulls).

Conundrum Cracker Solve 55% of Riddler challenges

Night Glider Glide continuously for over 100m

Bag Full O' Cache Find 75% of GPS caches.