| icon | info | gamerscore |
|---|---|---|
| Bridge Building Complete all test chambers in the Hard-Light Surfaces co-op course | 15 | |
| Party of Three Find the hidden companion cube in co-op test chamber | 25 | |
| Air Show Perform 2 aerial gestures before touching the ground in co-op | 20 | |
| Can't Touch This Dance in front of a turret blocked by a hard light bridge in co-op | 10 | |
| Dual Pit Experiment Do the same test twice | 15 | |
| White Out Complete the first Conversion Gel test | 15 | |
| Stranger Than Friction Master the Propulsion Gel | 15 | |
| Portrait of a Lady Find a hidden portrait | 10 | |
| Tater Tote Carry science forward | 15 | |
| Vertically Unchallenged Master the Repulsion Gel | 15 | |
| Stalemate Associate Press the button! | 15 | |
| No Hard Feelings Save a turret from redemption | 10 | |
| Good Listener Take GLaDOS' escape advice | 5 | |
| SaBOTour Make a break for it | 10 | |
| Bridge Over Troubling Water Complete the first Hard Light Bridge test | 10 | |
| Preservation of Mass Break the rules in Test Chamber 07 | 20 | |
| Drop Box Place a cube on a button without touching the cube | 20 | |
| Narbacular Drop Place a portal under your co-op partner while they are gesturing | 25 | |
| Rock Portal Scissors Win 3 co-op games of rock-paper-scissors in a row | 20 | |
| Empty Gesture Drop your co-op partner in goo while they are gesturing by removing the bridge under them | 25 | |
| Confidence Building Complete all test chambers in the Mass and Velocity co-op course | 10 | |
| Four Ring Circus Enter 4 different portals without touching the ground in co-op | 25 | |
| Team Building Complete all test chambers in the Team Building co-op course | 10 | |
| High Five Celebrate your cooperative calibration success | 5 | |
| Undiscouraged Complete the first Thermal Discouragement Beam test | 10 | |
| You Monster Reunite with GLaDOS | 5 | |
| Wake Up Call Survive the manual override | 5 | |
| Scanned Alone Stand in a defective turret detector | 5 | |
| You Saved Science Complete all test chambers in all courses of co-op | 100 | |
| Pturretdactyl Use an Aerial Faith Plate to launch a turret | 5 | |
| Final Transmission Find the hidden signal in one of the Rat Man's dens | 20 | |
| Pit Boss Show that pit who's boss | 30 | |
| Obstacle Building Complete all test chambers in the Excursion Funnels co-op course | 15 | |
| Gesticul-8 Perform all 8 gestures of your own volition in co-op | 15 | |
| You Made Your Point Refuse to solve the first test in Chapter 8 | 10 | |
| Lunacy That just happened | 20 | |
| The Part Where He Kills You This is that part | 20 | |
| Tunnel of Funnel Master the Excursion Funnel | 15 | |
| Smash TV Break 11 test chamber monitors | 75 | |
| Friends List With Benefits While playing co-op, hug 3 different people on your friends list | 50 | |
| Ship Overboard Discover the missing experiment | 10 | |
| Door Prize Examine all the vitrified test chamber doors | 20 | |
| Schrodinger's Catch Catch a blue-painted box before it touches the ground | 20 | |
| Professor Portal After completing co-op, complete Calibration Course online with a friend who hasn’t played before | 75 | |
| Still Alive Complete Course 4 with neither you nor your co-op partner dying | 15 | |
| Overclocker Complete Test Chamber 10 in 70 seconds | 30 | |
| Asking for Trouble Taunt GLaDOS in front of a camera in each of the five co-op courses | 10 | |
| Portal Conservation Society Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements | 20 | |
| Triple Crown Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each | 15 | |
| Iron Grip Never lose a cube in Chamber 6 of the Mass and Velocity co-op course | 20 |
