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Four Fully Upgraded Weapons Fully upgrade four weapons

Bigger Bang Complete story mode on Normal difficulty

Fully Researched Houdini Splicer Fully research the Houdini Splicer

Fully Researched Rosie Fully research the Rosie

Wrecking Ball Stop the unstoppable

Five Fully Upgraded Weapons Fully upgrade five weapons

Lost And Found Uncover the secret of Arkham City

Fully Researched Bouncer Fully research the Bouncer

Sandstorm We are legion

Hide And Seek A deadly game of hide and seek

Ghost Train Fight for survival

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

Freefall Don't look down

Exit Stage Right All the world is a stage

Research PhD Max out all possible research

Avid Inventor Successfully invent at least 100 items

Weapon Specialist Acquire all upgrades for all weapons

Stop the Clock Time is running out

To Greener Pastures Complete Chapter 2.

Broken Toys Destroy it all

Historian Find every audio diary

Locked and Loaded Upgrade each available component for a single sidearm or longarm weapon.

Bargaining Chip Reunite the separated couple

Seriously Good at This The player has completed the game on the Hard difficulty setting

Pick Pocket Steal the score of a lifetime

A Man Chooses Complete the game on Survivor difficulty

Must've Got Lost Complete "Lost in Nightmares" on any difficulty setting.

Dial Z For Murder Stop the phone booth killer

Brass Balls Complete the game on Hard difficulty without using a Vita-Chamber.

All Too Easy Kill Zinyak in less than 5 minutes in 'Save the Planet'.

I Chose the Impossible Complete the game on Survivor difficulty without using a Vita-chamber

Take From the Rich Rob or loot $250.

Settling Feuds Complete Chapter 3.

Mastermind Rescue the second hostage from Riddler

Platinum Trophy Unlocked all trophies

Indomitable Complete 'Meet the Dominatrix' without dying.

Invisible Predator Complete one predator challenge by using only Silent Takedowns and without being detected

Forensic Expert Collect enough evidence to locate the gun for hire

Biggest Bang Complete story mode on Hard difficulty

Contract Terminated Stop the contract operative

House of the Ned Completed the "House of the Ned" mission

Bow to the Boss! Kill the Dominatrix in 'Escape the Dominatrix'.

Friend of the Raptors Complete all five missions.

Predator Bronze Achieve 8 medals on predator challenges

Jakobs Fodder Completed the "Jakobs Fodder" mission

Ned's Undead, Baby, Ned's Undead Killed Ned. Again.

Washed Ashore Complete Chapter 4.

Night of the Living Ned Killed Ned...sort of

No Traitors Complete Chapter 5.

*BEEP* YOU, CLAWZ! Complete all three missions.