Portal 2 achievements
941
(510)

Portal 2

4.7 from 317 votes

There are a maximum of 51 Portal 2 achievements worth 941

7,722 tracked gamers have this game, 440 have completed it (5.70%)

Achievement Details

Confidence Building in Portal 2

Confidence Building14

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

  • Unlocked by 3,816 tracked gamers (49% - TSA Ratio = 1.41) 7,722  
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