| 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 |