cosmic-falcon82

Stranger Than Friction Master the Propulsion Gel

Just out of Reach Contact your team and escape Comms without being attacked by an android

White Out Complete the first Conversion Gel test

Dual Pit Experiment Do the same test twice

Scanned Alone Stand in a defective turret detector

Tunnel of Funnel Master the Excursion Funnel

The Part Where He Kills You This is that part

Lunacy That just happened

High Five Celebrate your cooperative calibration success

Mercy or Prudence? Complete the game without killing any humans

Good Listener Take GLaDOS' escape advice

Mind Your Step Navigate Reactor Maintenance without dying

100 Times Too Many Get killed by the Alien 100 times

Survivor Complete the game on the hardest difficulty setting

No Hard Feelings Save a turret from redemption

Drop Box Place a cube on a button without touching the cube

Archivist Collect 10 Nostromo logs in the main campaign

The Taken Collect all ID tags

Team Building Complete all test chambers in the Team Building co-op course

Preservation of Mass Break the rules in Test Chamber 07

One Shot Complete the game without dying

Alien: Isolation Unlocked every Alien: Isolation trophy

You Made Your Point Refuse to solve the first test in Chapter 8

Pturretdactyl Use an Aerial Faith Plate to launch a turret

Portrait of a Lady Find a hidden portrait

Confidence Building Complete all test chambers in the Mass and Velocity co-op course

Final Transmission Find the hidden signal in one of the Rat Man's dens

Pit Boss Show that pit who's boss

Ship Overboard Discover the missing experiment

Rock Portal Scissors Win 3 co-op games of rock-paper-scissors in a row

Door Prize Examine all the vitrified test chamber doors

Schrodinger's Catch Catch a blue-painted box before it touches the ground

Narbacular Drop Place a portal under your co-op partner while they are gesturing

Bridge Building Complete all test chambers in the Hard-Light Surfaces co-op course

Overclocker Complete Test Chamber 10 in 70 seconds

Air Show Perform 2 aerial gestures before touching the ground in co-op

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

Smash TV Break 11 test chamber monitors

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

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

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

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

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

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

Triple Crown Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each

Still Alive Complete Course 4 with neither you nor your co-op partner dying