50 achievements worth 1000 points
% of all tracked players
Undiscouraged
100.0%
Undiscouraged - 10 points
Complete the first Thermal Discouragement Beam test
You Monster
100.0%
You Monster - 5 points
Reunite with GLaDOS
Wake Up Call
100.0%
Wake Up Call - 5 points
Survive the manual override
Dual Pit Experiment
87.5%
Dual Pit Experiment - 15 points
Do the same test twice
White Out
87.5%
White Out - 15 points
Complete the first Conversion Gel test
Stranger Than Friction
87.5%
Stranger Than Friction - 15 points
Master the Propulsion Gel
Vertically Unchallenged
87.5%
Vertically Unchallenged - 15 points
Master the Repulsion Gel
Tater Tote
87.5%
Tater Tote - 15 points
Carry science forward
Bridge Over Troubling Water
87.5%
Bridge Over Troubling Water - 10 points
Complete the first Hard Light Bridge test
SaBOTour
87.5%
SaBOTour - 10 points
Make a break for it
Confidence Building
87.5%
Confidence Building - 10 points
Complete all test chambers in the Mass and Velocity co-op course
High Five
87.5%
High Five - 5 points
Celebrate your cooperative calibration success
Team Building
87.5%
Team Building - 10 points
Complete all test chambers in the Team Building co-op course
Stalemate Associate
87.5%
Stalemate Associate - 15 points
Press the button!
The Part Where He Kills You
75.0%
The Part Where He Kills You - 20 points
This is that part
Tunnel of Funnel
75.0%
Tunnel of Funnel - 15 points
Master the Excursion Funnel
No Hard Feelings
75.0%
No Hard Feelings - 10 points
Save a turret from redemption
Lunacy
75.0%
Lunacy - 20 points
That just happened
Bridge Building
62.5%
Bridge Building - 15 points
Complete all test chambers in the Hard-Light Surfaces co-op course
Scanned Alone
62.5%
Scanned Alone - 5 points
Stand in a defective turret detector
Obstacle Building
62.5%
Obstacle Building - 15 points
Complete all test chambers in the Excursion Funnels co-op course
Gesticul-8
62.5%
Gesticul-8 - 15 points
Perform all 8 gestures of your own volition in co-op
Can't Touch This
62.5%
Can't Touch This - 10 points
Dance in front of a turret blocked by a hard light bridge in co-op
Drop Box
62.5%
Drop Box - 20 points
Place a cube on a button without touching the cube
You Made Your Point
62.5%
You Made Your Point - 10 points
Refuse to solve the first test in Chapter 8
Air Show
62.5%
Air Show - 20 points
Perform 2 aerial gestures before touching the ground in co-op
You Saved Science
50.0%
You Saved Science - 100 points
Complete all test chambers in all courses of co-op
Portrait of a Lady
50.0%
Portrait of a Lady - 10 points
Find a hidden portrait
Rock Portal Scissors
37.5%
Rock Portal Scissors - 20 points
Win 3 co-op games of rock-paper-scissors in a row
Good Listener
37.5%
Good Listener - 5 points
Take GLaDOS' escape advice
Preservation of Mass
37.5%
Preservation of Mass - 20 points
Break the rules in Test Chamber 07
Empty Gesture
25.0%
Empty Gesture - 25 points
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
Pturretdactyl
25.0%
Pturretdactyl - 5 points
Use an Aerial Faith Plate to launch a turret
Narbacular Drop
25.0%
Narbacular Drop - 25 points
Place a portal under your co-op partner while they are gesturing
Ship Overboard
25.0%
Ship Overboard - 10 points
Discover the missing experiment
Final Transmission
25.0%
Final Transmission - 20 points
Find the hidden signal in one of the Rat Man's dens
Schrodinger's Catch
25.0%
Schrodinger's Catch - 20 points
Catch a blue-painted box before it touches the ground
Asking for Trouble
12.5%
Asking for Trouble - 10 points
Taunt GLaDOS in front of a camera in each of the five co-op courses
Four Ring Circus
12.5%
Four Ring Circus - 25 points
Enter 4 different portals without touching the ground in co-op
Door Prize
12.5%
Door Prize - 20 points
Examine all the vitrified test chamber doors
Overclocker
12.5%
Overclocker - 30 points
Complete Test Chamber 10 in 70 seconds
Pit Boss
12.5%
Pit Boss - 30 points
Show that pit who's boss
Iron Grip
12.5%
Iron Grip - 20 points
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Smash TV
0.0%
Smash TV - 75 points
Break 11 test chamber monitors
Still Alive
0.0%
Still Alive - 15 points
Complete Course 4 with neither you nor your co-op partner dying
Friends List With Benefits
0.0%
Friends List With Benefits - 50 points
While playing co-op, hug 3 different people on your friends list
Party of Three
0.0%
Party of Three - 25 points
Find the hidden companion cube in co-op test chamber
Professor Portal
0.0%
Professor Portal - 75 points
After completing co-op, complete Calibration Course online with a friend who hasn't played before
Portal Conservation Society
0.0%
Portal Conservation Society - 20 points
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
Triple Crown
0.0%
Triple Crown - 15 points
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each