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