Portal 2 achievements

55.29%
Lunacy
That just happened
55.36%
The Part Where He Kills You
This is that part
55.97%
Tunnel of Funnel
Master the Excursion Funnel
57.87%
Dual Pit Experiment
Do the same test twice
58.97%
White Out
Complete the first Conversion Gel test
60.14%
Stranger Than Friction
Master the Propulsion Gel
61.76%
Tater Tote
Carry science forward
62.88%
Team Building
Complete all test chambers in the Team Building co-op course
63.63%
Vertically Unchallenged
Master the Repulsion Gel
66.30%
Stalemate Associate
Press the button!
67.24%
SaBOTour
Make a break for it
69.70%
High Five
Celebrate your cooperative calibration success