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Achieved | Achievement | % of players | Unlock date |
|---|---|---|---|
 | Wake Up Call Survive the manual override | 87.17% | 14/03/2025, 09:21:15 |
 | You Monster Reunite with GLaDOS | 76.26% | 14/03/2025, 10:12:29 |
 | Undiscouraged Complete the first Thermal Discouragement Beam test | 73.82% | 14/03/2025, 10:26:35 |
 | High Five Celebrate your cooperative calibration success | 68.13% | |
 | Bridge Over Troubling Water Complete the first Hard Light Bridge test | 62.79% | 14/03/2025, 11:56:59 |
 | Team Building Complete all test chambers in the Team Building co-op course | 57.46% | |
 | SaBOTour Make a break for it | 54.79% | 14/03/2025, 15:57:29 |
 | Stalemate Associate Press the button! | 53.63% | 15/03/2025, 11:33:45 |
 | Vertically Unchallenged Master the Repulsion Gel | 50.49% | 16/03/2025, 11:26:47 |
 | Tater Tote Carry science forward | 48.29% | 16/03/2025, 12:20:39 |
 | Confidence Building Complete all test chambers in the Mass and Velocity co-op course | 47.47% | |
 | Stranger Than Friction Master the Propulsion Gel | 46.43% | 16/03/2025, 14:12:18 |
 | White Out Complete the first Conversion Gel test | 45.04% | 16/03/2025, 15:58:29 |
 | Dual Pit Experiment Do the same test twice | 43.53% | 16/03/2025, 18:05:40 |
 | Tunnel of Funnel Master the Excursion Funnel | 41.32% | |
 | Scanned Alone Stand in a defective turret detector | 40.86% | 15/03/2025, 11:15:38 |
 | The Part Where He Kills You This is that part | 40.51% | |
 | Lunacy That just happened | 40.16% | |
 | Air Show Perform 2 aerial gestures before touching the ground in co-op | 39% | |
 | Bridge Building Complete all test chambers in the Hard-Light Surfaces co-op course | 37.14% | |
 | No Hard Feelings Save a turret from redemption | 36.33% | 15/03/2025, 11:11:30 |
 | Drop Box Place a cube on a button without touching the cube | 33.89% | |
 | Good Listener Take GLaDOS' escape advice | 33.43% | |
 | Gesticul-8 Perform all 8 gestures of your own volition in co-op | 31.46% | |
 | Obstacle Building Complete all test chambers in the Excursion Funnels co-op course | 30.53% | |
 | Preservation of Mass Break the rules in Test Chamber 07 | 28.67% | |
 | You Saved Science Complete all test chambers in all courses of co-op | 24.61% | |
 | Portrait of a Lady Find a hidden portrait | 13.7% | |
 | Ship Overboard Discover the missing experiment | 12.54% | |
 | Rock Portal Scissors Win 3 co-op games of rock-paper-scissors in a row | 11.49% | |
 | Can't Touch This Dance in front of a turret blocked by a hard light bridge in co-op | 11.49% | |
 | Asking for Trouble Taunt GLaDOS in front of a camera in each of the five co-op courses | 10.45% | |
 | Pturretdactyl Use an Aerial Faith Plate to launch a turret | 10.33% | |
 | Pit Boss Show that pit who's boss | 9.05% | |
 | Door Prize Examine all the vitrified test chamber doors | 8.47% | |
 | Schrodinger's Catch Catch a blue-painted box before it touches the ground | 8.01% | |
 | Four Ring Circus Enter 4 different portals without touching the ground in co-op | 8.01% | |
 | You Made Your Point Refuse to solve the first test in Chapter 8 | 7.66% | |
 | Narbacular Drop Place a portal under your co-op partner while they are gesturing | 6.85% | |
 | Professor Portal After completing co-op, complete Calibration Course online with a friend who hasn’t played before | 6.73% | |
 | Final Transmission Find the hidden signal in one of the Rat Man's dens | 6.38% | |
 | Empty Gesture Drop your co-op partner in goo while they are gesturing by removing the bridge under them | 5.34% | |
 | Friends List With Benefits While playing co-op, hug 3 different people on your friends list | 5.11% | |
 | Overclocker Complete Test Chamber 10 in 70 seconds | 4.64% | |
 | Iron Grip Never lose a cube in Chamber 6 of the Mass and Velocity co-op course | 4.18% | |
 | Smash TV Break 11 test chamber monitors | 4.18% | |
 | Party of Three Find the hidden companion cube in co-op test chamber | 4.06% | |
 | Triple Crown Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each | 3.48% | |
 | Portal Conservation Society Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements | 3.13% | |
 | Talent Show Never lose a cube in Chamber 6 of the Mobility Gels co-op course | 3.02% | |
 | Still Alive Complete Course 4 with neither you nor your co-op partner dying | 2.79% |