Portal 2 achievements
951
(510)

Portal 2

4.7 from 285 votes

There are a maximum of 51 Portal 2 achievements worth 951

7,119 tracked gamers have this game, 379 have completed it (5.32%)

Achievement Details

Confidence Building in Portal 2

Confidence Building14

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

  • Unlocked by 3,508 tracked gamers (49% - TSA Ratio = 1.42) 7,119  
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