Alienkid

Son of Liberty Earn 20 individual citations.

Factory Zero You survived Hei Zhen Zhu and RBS using no Praxis kits, weapons, grenades or mines. Whoa.

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

Heavy Medals Earn All Medals

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

World Peace... For Now Beat the game on all difficulties.

Syngenesophobia Defeat the brothers.

Rag Doll Apprentice Earn Bronze on all challenges

Pack-A-Punch-ectomy In Revelations, recover the Pack-a-Punch machine from its abductor.

Turbocharged Completionist Gain all the stars in 'Turbocharged'.

The Chest Beat the Chest

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

Skewer the Winged Beast In Under the Radar, have the SAM target itself and the helicopter

Home Wrecker Use 50 pieces of interactable cover.

Pass the Buck Collect one hundred pennies!

All Going To Plan! Master Zangief! I fought in 50 network battles! The ring came to life with the clash of burning spirits! (Excludes Battle Lounge)

My First Extreme Played the rhythm game on EXTREME or EX EXTREME difficulty for the first time.

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

Katagelasticism Mock the traitor.

Moneybags Have 15000 credits in the bank in Outbreak.

Perfect 10 Pigsy's Perfect 10: Finish the Shooting Gallery under 40 seconds without shooting any pin-ups.

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

I’ve seen some things… In Kino Der Toten, visit every location the teleporter can take you to.

Soul Survivor Reach round 15 in Nazi Zombies without getting revived. (Map Pack 2 only)

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

Field Modified, Kill Certified Upgrade every slot for a weapon

Four Birds, One Stone Pigsy's Perfect 10: Kill 4 Mechs with 1 Bomb device.

Think She'll Notice? Destroy all of the cars in the mansion garage in 'Oligarch'

Silence of the Llamas Expel the Infestation at the Farm

Roadblock In chapter 4, defeated Motormaster while racing him.

Deer in the Headlights Stab five stunned enemies in a row in the "Light 'Em Up" Special Ops mission.

Have You Tried Turning it Off and On? Use a Shock Stick to disable an enemy Sentry Gun

The Power of Rico Compels You Exorcise the Infestation at the Church

Solino Chainsaw Massacre Eradicate the Infestation at the Compound

Unite In Speed Completionist Gain all stars in 'Unite In Speed'.

Gran Turismo Rally Complete the "Gran Turismo Rally" Special Event.

Dream Race Win the ultimate three-way showdown between a Ford Mark IV Race Car, a Ferrari 330 P4 Race Car and a Jaguar XJ13 Race Car.

Minuteman Earn 10 mission citations.

Obtain 100 Stars Obtain a total of 100 stars

They Came From the Lake Liquidate the Infestation at the Lake

Poo! Enter POO as your initials!

I'm dead serious Threw a chaff grenade at ZEKE (single player only).

E99 Tech Geek Purchased 10 different Hero Upgrades in single player campaign

Burgle Burgle Burgle Steal 10 kills from a teammate in Outbreak.

Kuwabara, Kuwabara Heard a ghost on the radio.

David vs Goliath In Checkmate, destroy the APC using an RC-XD

Pursuit of Knowledge Filled 80% of the Datalog.

Demons on a Plane Obliterate the Infestation at the Crash

Stash of 'Stache Complete the Stash!

One-man Army Kill 80 enemies in single mission