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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.

Gunslinger Kill 35 enemies with the pistol.

Opportunist Kill 25 unaware enemies.

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

Relic Hunter Collect 25% of all relics.

Scrounger Collect 5000 pieces of salvage.

Picky Loot 200 enemies.

A Survivor Is Born Complete the game.

Clever Girl Purchase all skills in one category.

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

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

Looking for Trouble Find 25% of GPS caches.

Equalizer Kill 75 enemies with the rifle.

Unfinished Business Complete one challenge.

Crab Cakes Kill FeeFee the crab.

Widowmaker Kill 40 enemies with the shotgun.

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

Historian Find 75% of all documents.

Born Free Escape from Intensive Treatment to the island surface

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

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

Archaeologist Collect 75% of all relics.

Intellectually Superior Complete all optional tombs.

Arkham Analyst Solve 5% of Riddler challenges

Just What The Doctors Ordered Save all the doctors in Medical

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

Daydreamer Survive the nightmare of the Scarecrow's fear gas

Cryptic Investigator Solve 10% of Riddler challenges

Baneful Payback Defeat Bane

Lethal Purchase all skills in all categories.

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

Boom Goes the Dynamite Shoot a bundle of dynamite out of the air.

Recurring Nightmare Face your biggest fears and keep your sanity

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

No Stone Left Unturned Find all documents, relics and GPS caches.

Solitary Confinement Capture and lock up Harley Quinn

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

Lateral Thinker Solve 25% of Riddler challenges

Double Trouble Defeat two Titan Henchmen at once

Took the Shaman's Path Survived the Shaman's Path and found Ourea's retreat.

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

The Professional Fully mod and completely upgrade all weapons.

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

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

Poisoned Ivy Defeat the giant Titan Ivy plant

Big Bang Complete story mode on Easy difficulty

Sole Survivor In multiplayer, be the only player on your team that isn't dead or downed.