Multi_Tasking

Titan Mastery Fully upgrade a Titan Subclass.

Complete a set During a single round kill an Infected, Suicider, Ram, Butcher, Floater, Walker.

Best of the Best Invest in each type of upgrade available for a specialization.

Bringing the Pain Defeat 50 players using physical attacks in Versus.

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

It's Raining Cats and Hotdogs Completed a round using the Mutator.

Werewolf Mastered Acquire 11 werewolf perks

The Last Laugh The joke's on who?

“A Shocking Turn of Events” – Expert The player has rescued the Little Sister in “A Shocking Turn of Events” in under 4:00

First Among Equals Win a match of skirmish or domination.

Master Architect Build three houses

Hunter Mastery Fully upgrade a Hunter Subclass.

Twice Nightly Complete New Game Plus

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

Locked and Loaded Develop 300 or more development items.

Elevator Action Knock off every Tripod during the Elevator Sequence

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

Sociopathic Networker Talked to all of Claptrap's Holographic Projections.

Dark Zone: Extraction Extract an item from each dark zone.

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

“Worlds of Hurt” – Collector Found all collectable Roses in “Worlds of Hurt”

Dragonrider Tame and ride 5 dragons

Darkmoon's Trophy Obtained Best Weapon by Darkmoonstone

His Full Attention Freedom Cry - Achieve 100% synchronization

Wheely Fast Outran the Wheel in the Temple of Boom.

Half-Truths Complete a mission without causing a single Military Alert.

Big Tournament Completed each of the larger challenges in all 3 coliseums

Paint Splurge Fire 5,000 paintballs

Big Game Hunter Complete a bounty from each safe house.

Deterrence Develop a nuclear weapon.

Taste of the Exotic Craft an exotic weapon or item.

Stalhrim Crafter Craft an item out of Stalhrim

Madness Begins In American McGee’s Alice, Complete Village of the Doomed

Disarmament Dispose of a nuclear weapon.

Run the Gauntlet Complete "Desperate Escape" on Professional.

Vampire Mastered Acquire 11 vampire perks

It Takes Two to Tango Chain a 40-defeated combo in Team Slayers.

Rogue's Trophy All Rings Obtained

Soldier's Trophy All Unique Weapons Obtained

“Worlds of Hurt” – Tough Guy Rescued the Little Sister in “Worlds of Hurt” using only plasmids, tonics, the wrench, and the research camera, on Medium or higher difficulty

Army of One Win 15 matches in Slayers.

The Crown Jewel Seek and destroy.

Sphinx' Riddle Complete all 40 of the Catwoman Riddler grid items

Suits You, Sir! Collect any suit of cards in the open world.

Master Slasher's Trophy Obtained Best Weapon by Bladestone

Strength of the Pack Complete a Strike with a full fireteam consisting of only your clan members.

Rexecutioner Destroy the Metal Gear REX boss

Aiding the Outcasts Completed "Aiding the Outcasts"

Accomplished Complete all missions.

The Guns of Anchorage Completed "The Guns of Anchorage"