Portal 2

25 of 51 ach. unlocked (50%)
Onocron's achievements in Portal 2
Perform 2 aerial gestures before touching the ground in co-op
Nov 26, 11
Taunt GLaDOS in front of a camera in each of the five co-op courses
Dec 23, 11
Complete all test chambers in the Hard-Light Surfaces co-op course
Dec 20, 11
Complete the first Hard Light Bridge test
Nov 23, 11
Complete all test chambers in the Mass and Velocity co-op course
Nov 26, 11
Do the same test twice
Nov 24, 11
Perform all 8 gestures of your own volition in co-op
Dec 23, 11
Celebrate your cooperative calibration success
Nov 25, 11
That just happened
Nov 24, 11
Save a turret from redemption
Nov 24, 11
Complete all test chambers in the Excursion Funnels co-op course
Dec 23, 11
Break the rules in Test Chamber 07
Nov 23, 11
Make a break for it
Nov 24, 11
Press the button!
Nov 24, 11
Master the Propulsion Gel
Nov 24, 11
Carry science forward
Nov 24, 11
Complete all test chambers in the Team Building co-op course
Nov 25, 11
This is that part
Nov 24, 11
Master the Excursion Funnel
Nov 24, 11
Complete the first Thermal Discouragement Beam test
Nov 23, 11
Master the Repulsion Gel
Nov 24, 11
Survive the manual override
Nov 23, 11
Complete the first Conversion Gel test
Nov 24, 11
Reunite with GLaDOS
Nov 23, 11
Complete all test chambers in all courses of co-op
Dec 23, 11
Dance in front of a turret blocked by a hard light bridge in co-op
Locked
Examine all the vitrified test chamber doors
Locked
Place a cube on a button without touching the cube
Locked
Drop your co-op partner in goo while they are gesturing by removing the...
Locked
Find the hidden signal in one of the Rat Man's dens
Locked
Enter 4 different portals without touching the ground in co-op
Locked
While playing co-op, hug 3 different people on your friends list
Locked
Take GLaDOS' escape advice
Locked
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
Locked
Place a portal under your co-op partner while they are gesturing
Locked
Complete Test Chamber 10 in 70 seconds
Locked
Find the hidden companion cube in co-op test chamber
Locked
Show that pit who's boss
Locked
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total...
Locked
Find a hidden portrait
Locked
After completing co-op, complete Calibration Course online with a friend who...
Locked
Use an Aerial Faith Plate to launch a turret
Locked
Win 3 co-op games of rock-paper-scissors in a row
Locked
Stand in a defective turret detector
Locked
Catch a blue-painted box before it touches the ground
Locked
Discover the missing experiment
Locked
Break 11 test chamber monitors
Locked
Complete Course 4 with neither you nor your co-op partner dying
Locked
Never lose a cube in Chamber 6 of the Mobility Gels co-op course
Locked
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
Locked
Refuse to solve the first test in Chapter 8
Locked
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