NikeNineTwo

OMG Defeat Omega on "Final Fantasy" mode.

You Have My Sympathies Help Van Zandt

Mission... accomplished? Finish the Campaign on any difficulty (all Intervals complete)

Gran Turismo Karting Experience Complete the "Gran Turismo Karting Experience" Special Event.

Almost Halfway Attain Rank 10

Pull the Plug Remove the Power Battery without destroying any of the sentry turrets

Get to the Chopper! Awakened: Escape from Tau Volantis to the Terra Nova.

DIAMONDS! Acquire diamonds with your iron tools.

Asking for Trouble Taunt GLaDOS in front of a camera in each of the five co-op courses

The Veteran Severed: Complete on Zealot difficulty

TBoGT: Bear Fight Win the L.C. Cage Fighters championship. (The Ballad of Gay Tony)

Bad Moon Rising Complete Dead Space™ 3 Awakened.

Supersoaker Strike three or more enemies with Tidal attacks while using unlimited ammunition following a Quick Refill.

A True Master Earn 5 Gears in all Challenges of the Sky Fortress Expansion.

Bake Bread Turn wheat into bread.

Heretic Awakened: Kill the Unitologist Cult Leader.

Adios, Muchachos Gib two enemies at once

Youngling Complete Jedi Temple - Apprentice difficulty

Pushing Ahead Gain access to the Compound area in Nightfall in Regular or Hardcore difficulty.

Still Breathing Complete the Trial by Water.

Still Got a Job to Do Complete Rampart

Friendly Sheep Rescue at least 100 sheep.

As The World Turns Use the large globe to kill 10 enemies in the museum

Just a Grunt Complete Hope in Hadley's

Beyond the Autobahn Drive 12,718km in total - the length of all Germany's Autobahns combined.

It’s a Sign! Craft and place a sign.

A Most Worthy Vessel Acquire and master all Leviathan and Ultima abilities.

Retrieve the Data Complete "Retrieve the Data"

Dragged Queen Complete Home

Iron Man Wear a full suit of Iron armour.

Game Over, Man! Complete all Campaign levels on any difficulty

No Need For Alarm Complete One Bullet without setting off the alarm

Iron Grip Never lose a cube in Chamber 6 of the Mass and Velocity co-op course

150,000 point game Obtain 150,000 Points on one level

Renewable Energy Smelt wood trunks using charcoal to make more charcoal.

I Will Never Leave You... Locate Tequila

Robot Parts Defeat the training room in less than 2 minutes

Party of Three Find the hidden companion cube in co-op test chamber

Secreted from What? Kill 5 Spitters without being damaged by acid

...That's A Promise Get Tequila to surgery

Top Gear Test Track Complete the "Top Gear Test Track" Special Event.

Thou Brakest the Head Defeat Leviathan in "Final Fantasy" mode.

Just the Tip Awakened: Craft a Weapon using a MK-II Weapon Tip.

One Big Bug Defeat the Praetorian

Get to The Chopper! Recover Weyland's datapad

The Cable Guy Use the electrical cables throughout Echo Base to shock fifteen enemies

A Star is Born Train a B-Spec driver up to Class 30 or above.

Repopulation Breed two cows with wheat.

Padawan Complete Jedi Temple - Sith Warrior difficulty

Portal Conservation Society Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements