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Guerrilla Tactics Execute at least 25 different Skillshots in one Echo round

Isaac's Tears Kill Isaac with Isaac

Horsepower Completionist Gain all stars in 'Horsepower'.

Took this thing on a test flight Complete Arcade mode with a custom made ship, at Veteran difficulty level

Greatest Tag-Team in History Defeat both Lightning Skeleton arenas in The Great Temple on Hard Mode, with 2 or more players (or as Javier Jaguar)

Trine 2 Hard Earn all Trophies in Trine 2

A Nightmare On Kusi Street Purge the Infestation on the Mainland

dr0n3d Complete the "Arctic Recon" Special Ops mission in under 3:30.

Pâtissier Create all flavors of ice cream.

In off Score off the woodwork in a match

High Roller Complete the "Iron Clad" Special Ops mission on Veteran difficulty.

Mixed Messages Take a picture with elements of horror, brutality, outtake and erotica in a single shot.

Perk-a-Holic Have all four perks simultaneously active in a game of Nazi Zombies. (Map Pack 2 only)

RPM Completionist Gain all stars in 'RPM'.

A New Protagonist Earned the top ranking in the Friendly Match.

Total Fist Bump Destruction Finish the game as best friends

Hole In One Complete "Golf"

Specter Officer Reach max level with one class in the Cooperative campaign.

A for effort Attain a Time Trial star rating of 35

Elements Completionist Gain all stars in 'Elements'.

King of the Arena Complete all four-star missions in the Mirage Arena.

Long Board Ride the Hoverboard for a total of 10,000 meters (electro-mag cables don't count!)

Ultra, Man! If yer gonna fight, give it your all, pal. Performing 100 Ultra Combos oughta do it, eh?

Together Till the End Be the last man standing

Z-Genocider 2: Genocide Harder Kill 53,596 zombies

Hero Save a penalty

Technological Terror Destroy a "harvester."

Provocateur Collected and assembled the Battledress of the Provocateur. ("Leliana's Song" downloadable content)

Yeeee HAW! Complete the Adventure Mode on the Hard difficulty.

Now You Must Tell the Tale Viewed all Legends

Pea Shooter Kill a Rhino with only a pistol in Nightfall in Regular or Hardcore difficulty.

40 Knives! Kill 40 zombies with the bowie knife. (Map Pack 3 only)

GD Parkour Instructor Complete all Parkour Fever Challenges at night

Chain of Memories Master Obtain all trophies.

Seal the Deal Complete a Triumph Seal.

Perkaholics Anonymous! Survive until round 20 without buying a single Perk. (Map Pack 3 only)

Frequent Flyer! Use the teleporter 8 times. (Map Pack 3 only)

The Chest Beat the Chest

Aerial Threat Score a header with a player with the Aerial Threat Speciality

Turbocharged Completionist Gain all the stars in 'Turbocharged'.

How You Doin'? Learn the Charisma Skill.

Savage Slayer Complete all Unversed battle missions with the highest rank.

Utility Man Complete all Missions intercepted from cellular tower signals

Villains' Vendetta Win the Villains' Vendetta battle in the Mirage Arena.

Keeper of the Vigil Saved Vigil's Keep ("Dragon Age: Origins - Awakening" expansion)

Wrapped Up Complete "Thermal"

Death of Comedy Use every type of novelty weapon on a zombie

Interception Grapple to an Agent who's reeling through the air, and reel-kick them

Lamborghini Icons Completionist Gain all the stars in 'Lamborghini Icons'.

Hard Times To escape death is to beat the strongest of the strong. Finish Arcade Mode on Hardest, kid!