Portal 2 achievements

54.72%

The Part Where He Kills You

This is that part

54.80%

Confidence Building

Complete all test chambers in the Mass and Velocity co-op course

55.34%

Tunnel of Funnel

Master the Excursion Funnel

57.29%

Dual Pit Experiment

Do the same test twice

58.38%

White Out

Complete the first Conversion Gel test

59.59%

Stranger Than Friction

Master the Propulsion Gel

61.26%

Tater Tote

Carry science forward

62.84%

Team Building

Complete all test chambers in the Team Building co-op course

63.21%

Vertically Unchallenged

Master the Repulsion Gel

66.00%

Stalemate Associate

Press the button!

66.93%

SaBOTour

Make a break for it

69.72%

High Five

Celebrate your cooperative calibration success