Achievements

Pit Boss (30G)
Show that pit who's boss

Preservation of Mass (20G)
Break the rules in Test Chamber 07

Pturretdactyl (5G)
Use an Aerial Faith Plate to launch a turret

Lunacy (20G)
That just happened

Drop Box (20G)
Place a cube on a button without touching the cube

Overclocker (30G)
Complete Test Chamber 10 in 70 seconds

No Hard Feelings (10G)
Save a turret from redemption

Schrodinger's Catch (20G)
Catch a blue-painted box before it touches the ground

Ship Overboard (10G)
Discover the missing experiment

Final Transmission (20G)
Find the hidden signal in one of the Rat Man's dens

Good Listener (5G)
Take GLaDOS' escape advice

Scanned Alone (5G)
Stand in a defective turret detector

The Part Where He Kills You (20G)
This is that part

Bridge Over Troubling Water (10G)
Complete the first Hard Light Bridge test

SaBOTour (10G)
Make a break for it

Stalemate Associate (15G)
Press the button!

Wake Up Call (5G)
Survive the manual override

You Monster (5G)
Reunite with GLaDOS

Undiscouraged (10G)
Complete the first Thermal Discouragement Beam test

White Out (15G)
Complete the first Conversion Gel test

Tunnel of Funnel (15G)
Master the Excursion Funnel

Dual Pit Experiment (15G)
Do the same test twice

Tater Tote (15G)
Carry science forward

Vertically Unchallenged (15G)
Master the Repulsion Gel

Stranger Than Friction (15G)
Master the Propulsion Gel

Professor Portal (75G)
After completing co-op, complete Calibration Course online with a friend who hasn’t played before

Air Show (20G)
Perform 2 aerial gestures before touching the ground in co-op

Portal Conservation Society (20G)
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements

Empty Gesture (25G)
Drop your co-op partner in goo while they are gesturing by removing the bridge under them

Party of Three (25G)
Find the hidden companion cube in co-op test chamber

Narbacular Drop (25G)
Place a portal under your co-op partner while they are gesturing

Asking for Trouble (10G)
Taunt GLaDOS in front of a camera in each of the five co-op courses

Rock Portal Scissors (20G)
Win 3 co-op games of rock-paper-scissors in a row

Friends List With Benefits (50G)
While playing co-op, hug 3 different people on your friends list

Four Ring Circus (25G)
Enter 4 different portals without touching the ground in co-op

Triple Crown (15G)
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each

Still Alive (15G)
Complete Course 4 with neither you nor your co-op partner dying

Can't Touch This (10G)
Dance in front of a turret blocked by a hard light bridge in co-op

Smash TV (75G)
Break 11 test chamber monitors

High Five (5G)
Celebrate your cooperative calibration success

Team Building (10G)
Complete all test chambers in the Team Building co-op course

Door Prize (20G)
Examine all the vitrified test chamber doors

Portrait of a Lady (10G)
Find a hidden portrait

You Made Your Point (10G)
Refuse to solve the first test in Chapter 8

You Saved Science (100G)
Complete all test chambers in all courses of co-op

Iron Grip (20G)
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course

Gesticul-8 (15G)
Perform all 8 gestures of your own volition in co-op

Confidence Building (10G)
Complete all test chambers in the Mass and Velocity co-op course

Bridge Building (15G)
Complete all test chambers in the Hard-Light Surfaces co-op course

Obstacle Building (15G)
Complete all test chambers in the Excursion Funnels co-op course