Wake Up Call
Survive the manual override


You Monster
Reunite with GLaDOS


Undiscouraged
Complete the first Thermal Discouragement Beam test


Bridge Over Troubling Water
Complete the first Hard-Light Surfaces test


SaBOTour
Make a break for it


Stalemate Associate
Press the button!


Tater Tote
Carry science forward


Vertically Unchallenged
Master the Repulsion Gel


Stranger Than Friction
Master the Propulsion Gel


White Out
Complete the first Conversion Gel test


Tunnel of Funnel
Master the Excursion Funnel


Dual Pit Experiment
Do the same test twice


The Part Where He Kills You
This is that part


Pit Boss
Show that pit who's boss


Preservation of Mass
Break the rules in Test Chamber 07


Pturretdactyl
Use an Aerial Faith Plate to launch a turret


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


Good Listener
Take GLaDOS' escape advice


Scanned Alone
Stand in a defective turret detector


No Hard Feelings
Save a turret from redemption


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


Ship Overboard
Discover the missing experiment


Door Prize
Examine all the vitrified test chamber doors


Portrait of a Lady
Find a hidden portrait


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


Smash TV
Break 11 test chamber monitors


High Five
Celebrate your cooperative calibration success


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


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


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


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


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


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


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


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


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


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


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


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


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


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


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


Overclocker
Complete Test Chamber 10 in 70 seconds


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


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


Friends List With Benefits
While playing co-op, hug 3 different people on your friends list


Lunacy
That just happened


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


Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before


Portal 2 Platinum Trophy
Collected all other Portal 2 trophies