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Defeated Dr. Steinman The player has defeated the crazed Dr. Steinman

Hacked a Security Camera The player has successfully hacked a security camera

Researched a Splicer The player has taken at least one Research Photo of a Splicer

Bought One Slot The player has purchased one slot in any Plasmid or Tonic track

Quality Research Photo The player has taken a Research Photo of the highest grade

Defeated Peach Wilkins The player has defeated Peach Wilkins

Upgraded a Weapon The player has acquired at least one weapon upgrade

Basic Inventor The player has successfully invented at least one item

Restored the Forest The player has restored the forests of Arcadia

One Fully Upgraded Weapon The player has fully upgraded one weapon

Chimney Sweep There is only one way in

Completed Cohen's Masterpiece The player has completed Sander Cohen's great masterpiece

Two Fully Upgraded Weapons The player has fully upgraded two weapons

Defeated Andrew Ryan The player has defeated Andrew Ryan

Maxed One Track The player has purchased every slot in one of the Plasmid or Tonic tracks

One-Armed Bandit Hammer the point home

Broke Fontaine's Mind Control The player has broken Fontaine's mind control

Became a Big Daddy The player has become a Big Daddy

Defeated Atlas The player has defeated Atlas

Skilled Hacker The player has successfully completed 50 hacks

Three Fully Upgraded Weapons The player has fully upgraded three weapons

Fully Researched Gun Splicer The player has fully researched the Leadhead Splicer

Ammo Inventor The player has successfully invented all possible ammo types

Fully Researched Thug Splicer The player has fully researched the Thuggish Splicer

Maxed All Tracks Purchased every slot in all four Plasmid and Tonic tracks

Fully Researched Spider Splicer The player has fully researched the Spider Splicer

Little Sister Savior The player has completed the game without harvesting any Little Sisters

Four Fully Upgraded Weapons Fully upgrade four weapons

Prolific Photographer Take at least one photo in every research group

Communication Breakdown Clear the airwaves

Dealt with every Little Sister The player has either Harvested or Rescued every possible Little Sister

Gladiator Last man standing

Fully Researched Houdini Splicer Fully research the Houdini Splicer

Wrecking Ball Stop the unstoppable

Fully Researched Rosie Fully research the Rosie

Lucky Winner Hit the jackpot at a slot machine

Fully Researched Nitro Splicer Fully research the Nitro Splicer

Fully Researched Little Sister Fully research the Little Sister

Lost And Found Uncover the secret of Arkham City

Irony The player has taken a picture of Sander Cohen's corpse

Sandstorm We are legion

Five Fully Upgraded Weapons Fully upgrade five weapons

Hide And Seek A deadly game of hide and seek

Fully Researched Bouncer Fully research the Bouncer

Arkham City Sirens Drop in on an old friend

IQ Test Solve the first riddle

Ghost Train Fight for survival

Freefall Don't look down

Exit Stage Right All the world is a stage

Tonic Collector Collect or Invent 58 Tonics in the Physical, Engineering and Combat tracks