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Treadhead - Kill 30 Helghast whilst in the tank Take 30 Helghast lives whilst using the ISA tank

Graduation Day Complete both Terms of the Popit Academy

Graduate Complete Popit Academy Term 2

Irish Legend Complete all territories of Ireland (Wrath of the Druids).

"I'm all in." Complete 'Suburban Shakedown' as Tyler.

Super-Speed Fists You cleared Offline Mode Time Attack within 20 minutes.

Tower Warrior Complete a Tower with every character

Conscientious Killer Complete the campaign on any difficulty without shooting any civilians

The Take Greedy bastard. You accepted O'Malley's blood money and let him go.

Grappled Defeat 100 enemies with a grapple move

Dapper Capper Collect 10 hats.

Avoid Flying Heads You escaped from Alisa's Spam Bomb move.

Planet Star Star a planet in Story mode

Light collector Gather all the 30 Light gems

Well Rounded Play every character variation

Veteran Acquire 100000 experience points

Hardened War Hero Complete the game on Hardened or Veteran difficulty. (Solo only)

Undertaker - Kill 1000 Helghast Kill 1000 Helghast soldiers

Keep it Secret Find a secret fight in the Living Towers

Green collector Gather all the 30 Life gems

Medic!  Revive your Co-Op partner 10 times.

Duke or Dimwit? Defeated all waves in Duke and Dimwit Theater.

Curator Discover all of the collectibles in the Campaign.

The Explorer Complete all optional missions.

Hangar 18 You found and read the secret message. Now you know too much...

Good Listener Take GLaDOS' escape advice

The way to Stardom! Create a set using at least one object, one controller effect, one visual effect, one mask and changing background music.

Kevorkian Complex You granted a dying man his final request.

Sunbreaker Complete "The Sunbreakers' Challenge" quest.

Master improver Find all the secret Brotherhood arks

Do What Is Right Complete the Siege of Paris campaign (The Siege of Paris).

The Collector Have a dominated Caragath, Wretched Graug and Spitter Ghûl simultaneously.

Dark collector Gather all the 30 Shadow gems

Live Laugh Hut Fully furnish your hut.

Epic Raider Complete a Raid on hard difficulty.

Dwarf Raiden Incapacitate all the soldiers in File R-02 using a Dwarf Gekko.

Taffer's Delight Completed Burial at Sea - Episode 2 in 1998 mode.

FPR Win a race using only the vehicle-mounted camera.

Future Past Enter the Assassin Bureau in Francia (The Siege of Paris).

Weedkiller Kill 5 Cysts in the Biology Building with a single poison gas cloud.

Speed Demon Complete Hard Mode Under 5:41:28 s

Master jeweler Gather all hidden magic gems

Master Win a single complete match with every character variation

Play Complete all story levels without dying, with the exception of those levels that only end when you die

Booty Master Collect all the prize bubbles on the story levels

Pond Scum Destroy a total of 5 Vodomjerka during story mode.

The Sun Sets Complete 'Breaking Point' on Veteran difficulty. (Solo only)

Rope-a-Dope In CitC, knock an enemy around the city with Undertow, then knock him off the edge of the city.

Force Lightning Mastery Defeat 500 enemies with Force Lightning

You woke up granny! Keep pumping a balloon until it bursts.