Platingamer-HRO

Kaleidoscope Kill 3 enemies using sniper scope while wearing the Gas mask and using the Night Vision goggles all at the same time.

A tremor in the Force Play once as all the different heroes in the original game (Multiplayer)

Made it Out Alive Escape 1st time in Regular or Hardcore difficulty.

Hell-Burbia Completed the larger challenge in the Hell-Burbia coliseum

40 and Flirty Reach level 40

Headcase Headshot a Demolition mech 20 times.

A Little Closure You investigated the cult's activities at Sammy's

Hey, it's-a-me again! Perform a highground attack as a finishing move

The Last Laugh The joke's on who?

Chain Reaction You exploded 10 vehicles in 10 seconds.

Master Mechanic Fully upgrade all weapons in Campaign Mode

Know DP? Know madness Complete the game on Ultra-Violence! difficulty

The Scalpel Singleplayer: Achieve 20 total knife kills

Creature of Habit You investigated the scene

Blast Corps Kill 30 enemies with explosion damage.

Danger Zone Buy all items from the Survival Air Support Armory.

From the Jaws Save your Co-Op partner from an execution by killing the attacker.

Career Criminal Attain 100% Game Completion.

Kickin' Up Dust You helped MJ and Roxy get the Witnesses free

The Power of Three Completely upgrade three weapons.

Toast Use the upgraded Deadeye secondary fire to kill 2+ enemies, 5 times

Spelunker Complete one Tomb of the Fallen

Head Games Rescue Mad Hatter's second hostage.

Ain't Nowhere Safer You captured Slim Beaumont

A New Hope Play every multiplayer game mode in the original game

Swiped clean! Save all the Teensies in one world to win a Diamond Cup

I Had To Put Him Down Kill a Caragath with an Execution.

Plus Package Upgrade a Contraption

Skilled Clear any mission (including Side Ops and Extra Ops) with a S-rank

Twice Nightly Complete New Game Plus

Counterintuitive Perform 20 Counter Attacks.

From the Shadows In Shadows of Evil, spot the Shadowman fives times in one game.

Untouchable Complete a Chapter without losing any health.

Silver Revenge Obtain 48 medals on the original Arkham City ranked maps (as Batman)

Biff! Bap! KaPow! Kill three enemies in a melee combo.

Electric Avenue Use the EMP to take down 25 drones

Spread The Love - Kill 5 Helghast at once using the WASP's secondary fire Killed 5 Helghast at once using the secondary fire mode of the WASP launcher

They Go "Boom" Get 30 kills with the Magnum secondary fire in the single player Campaign.

Truth In Its Purest Form Collect all of Antonio's notes.

Rolled Over You managed 5 car rolls in a row from one crash.

Against Wood and Stone Fully upgrade a building in the Hideout

In Storybook Endings Lock up Mad Hatter in GCPD.

Silent Partner Damage the same enemy in Cooperative Mode for 100 kills

The Angelic Ruins Completed the larger challenge in The Angelic Ruins coliseum

Armor Piercing Kill a tank driver with the Quantum Aperture.

His Own Medicine Disarm the Gouverneur and kill him with the branding iron.

Better than a Bucket Equip legendary gear in all slots

I'm ahead! Beat one of your friends' scores in a Challenge

Solid Gold, Baby! Earn any 70 Gold Medals on Missions, Strangers and Freaks.

The Fat and the Furious Complete a Continuous Speed Run as Doughnut Drake