DoubleStrike

Alpha Rescue Diamond Achieve a score of 500,000 points

Beta Rescue Diamond Achieve a score of 500,000 points

Top of the Class Earn a total of 10,000,000 points

Unleashed Purchase every Upgrade

Perfectionist Complete all of the Challenges in the Game

Noble Achievement Collect all Trophies

Chimney Sweep There is only one way in

One-Armed Bandit Hammer the point home

Communication Breakdown Clear the airwaves

Gladiator Last man standing

Wrecking Ball Stop the unstoppable

Lost And Found Uncover the secret of Arkham City

Sandstorm We are legion

Hide And Seek A deadly game of hide and seek

IQ Test Solve the first riddle

Ghost Train Fight for survival

Arkham City Sirens Drop in on an old friend

Freefall Don't look down

Exit Stage Right All the world is a stage

Saw the Elephant Completed the Main Campaign on Normal difficulty or above.

Stop the Clock Time is running out

Conundrum Rescue the first hostage from Riddler

Broken Toys Destroy it all

Bargaining Chip Reunite the separated couple

Pick Pocket Steal the score of a lifetime

Dial Z For Murder Stop the phone booth killer

Mastermind Rescue the second hostage from Riddler

Forensic Expert Collect enough evidence to locate the gun for hire

Contract Terminated Stop the contract operative

Mystery Stalker Reveal the mystery watcher

Serial Killer Track down the serial killer

AR Knight Complete all augmented reality training exercises

Freeflow Bronze Achieve 8 medals on combat challenges

Puzzler Rescue the third hostage from Riddler

Gadget Attack Use 5 different Quickfire gadgets in one fight (any play mode)

Stone Cold Pinkerton Completed the Main Campaign on Hard difficulty or above.

Aggravated Assault Stop all assaults in Arkham City

Fully Loaded Collect all of Batman's gadgets and upgrades

50x Combo Complete a combo of 50 moves (any play mode, any character)

Freeflow Perfection Perform a perfect combo including all of Batman's combat moves (any play mode)

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

Auld Lang Syne Completed the Main Campaign on 1999 Mode.

Scavenger Hunt Completed the Main Campaign in 1999 Mode without purchasing anything from a Dollar Bill machine.

Platinum Columbia Acquire all other trophies

Intellectual Rescue the fourth hostage from Riddler

Freeflow Silver Achieve 16 medals on combat challenges

Family Jewels Retrieve your stolen goods

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

Brainteaser Rescue the fifth hostage from Riddler

Freeflow Gold Achieve 24 medals on combat challenges