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Stop the Clock Time is running out

Broken Toys Destroy it all

Bargaining Chip Reunite the separated couple

Dial Z For Murder Stop the phone booth killer

Forensic Expert Collect enough evidence to locate the gun for hire

Contract Terminated Stop the contract operative

Mystery Stalker Reveal the mystery watcher

AR Knight Complete all augmented reality training exercises

Pay Your Respects A moment of remembrance

Trials Sneak through the underground passage without tearing your scarf.

Serial Killer Track down the serial killer

Where are the other two? Found the nuke

Puzzler Rescue the third hostage from Riddler

This is the end Failed to prevent the attack

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

Found Cohen's Room The player has entered Sander Cohen's personal quarters

Fully Loaded Collect all of Batman's gadgets and upgrades

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

Wanted: Dead or Alive Captured Al Bashir

Aggravated Assault Stop all assaults in Arkham City

Twofor Took down 2 enemies with 1 bullet in Night Shift

Crossing Reach the summit with a companion and return to the beginning.

No Escape Captured Kaffarov

Ooh-rah! Completed the campaign story

Trifecta Score a Goal, Save a shot, and Assist a teammate in a single game

Intellectual Rescue the fourth hostage from Riddler

Family Jewels Retrieve your stolen goods

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

Weapon Specialist Acquire all upgrades for all weapons

Between a rock and a hard place Beat Solomon, flawlessly, in The Great Destroyer

Jakobs Fodder Completed the "Jakobs Fodder" mission

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

Gotham Base Jumper Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.

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

Unconventional Warfare Use the explosive bolts to kill 30 enemies in the campaign.

Getaway Complete "Desperate Escape" on any difficulty setting.

Making a Monster Built the New Car: Monster

Brainteaser Rescue the fifth hostage from Riddler

Scrap Metal Destroyed 6 enemy tanks before reaching the fort in Thunder Run

Flawless Freeflow Fighter 2.0 Complete one combat challenge without taking damage (any character)

Wonder Meet 10 or more unique travelers.

Genius Rescue all the hostages from Riddler

A Man Chooses Complete the game on Survivor difficulty

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

Mirage Find the hidden desert flower.

Athena, Out Rescued Athena

Coming On Strong Score or Assist a combined 30 goals or assists in Casual or Competitive Online matches

Ultimate Sacrifice Only one can survive.

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

Easy Rhino In Dead Ops Arcade, use a Speed Boost to blast through 20 or more enemies at one time.