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Research Facility Completed the Research Facility Mission

TLAD: Get Good Wood In the bike races, whack off 69 bikers with a bat. (The Lost and Damned)

Gesticul-8 Perform all 8 gestures of your own volition in co-op

Battle-master Unlock every active-cast ability in one character’s skill tree.

Obstacle Building Complete all test chambers in the Excursion Funnels co-op course

Can't Touch This Dance in front of a turret blocked by a hard light bridge in co-op

Up Close and Personal Kill 20 enemies with Impulse in single player campaign

Rail Line Completed the Rail Line Mission

Well-arrayed Equip all parts of an armor set.

TBoGT: Gone Down Complete all base jumps. (The Ballad of Gay Tony)

You Saved Science Complete all test chambers in all courses of co-op

Central Docks Completed the Central Docks Mission

Living Shield Absorb 25,000 total damage during the course of 1 level.

Ashes to Ashes Age 15 soldiers to Dust in single player campaign

Fire and Ice Kill 10 enemies with Propane Tanks or Cryo Tanks in single player campaign

TBoGT: Snow Queen Complete 25 drug wars. (The Ballad of Gay Tony)

Empty Gesture Drop your co-op partner in goo while they are gesturing by removing the bridge under them

E99 Processing Complex Completed the E99 Processing Complex Mission

Singularity Completed Singularity

The Slower the Better 25 Kasimov SNV-E99 slo-mo kills in single player campaign

Pistol Whipped 20 Centurion kills in single player campaign

Hero of Legend Complete a playthrough on Heroic difficulty.

TBoGT: Catch the Bus Dance perfectly in both Tony's nightclubs. (The Ballad of Gay Tony)

The Good of the Many You sacrificed yourself to stop Demichev

One TMD to Rule Them All You chose to live and rule the world alone

Fully Armed Fully Upgraded 1 Weapon in single player campaign

Against All Odds Complete a playthrough on Legendary difficulty.

The Needs of the Few You chose to live and join Demichev

Four Ring Circus Enter 4 different portals without touching the ground in co-op

Put the Dead in Deadlock Kill 10 enemies inside a Deadlock in single player campaign

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

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

Time Bandit Grab 5 Shields from enemies in single player campaign

Warrior of the North Earn all trophies for Lord of the Rings: War in the North

You're a Hit 20 Spikeshot kills in single player campaign

New Year Celebrate the New Year in THE TWO COLONELS Chapter.

Pen Pal Used the TMD to find 15 Chrono-Notes in single player campaign

Duty and conscience Make a moral choice in THE TWO COLONELS Chapter.

Jump That Shark! Complete all Jimmy's Jammin' Jaunt trials

Father and son Provide guidance for Kirill in THE TWO COLONELS Chapter.

Roller Derby 20 Dethex Launcher kills in single player campaign

Time's on My Side Purchased 5 different TMD Equipment items in single player campaign

Real colonel Complete THE TWO COLONELS Chapter.

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

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

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

Night of the Living Revert Turn 15 soldiers into Reverts in single player campaign

No Time to Bleed 15 Autocannon kills without reloading in single player campaign

Stay After Class Used the TMD to revert 10 Chalkboards in single player campaign

Mind you, it's quite heavy! Kill 3 Nosalises with flamethrower's melee attack in THE TWO COLONELS Chapter