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