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