Portal 2 achievements
907
(510)

Portal 2

4.6 from 447 votes

There are a maximum of 51 Portal 2 achievements worth 907

10,253 tracked gamers have this game, 657 have completed it (6.41%)

Achievement Details

Confidence Building in Portal 2

Confidence Building14

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

  • Unlocked by 5,490 tracked gamers (53% - TSA Ratio = 1.36) 10,288  
Do you have a question about this achievement? Please post it in the Portal 2 Forum

Related Achievements and Trophies