Portal 2 achievements
911
(510)

Portal 2

4.6 from 329 votes

There are a maximum of 51 Portal 2 achievements worth 911

7,989 tracked gamers have this game, 494 have completed it (6.18%)

Achievement Details

Party of Three in Portal 2

Party of Three27

Find the hidden companion cube in co-op test chamber

  • Unlocked by 1,099 tracked gamers (14% - TSA Ratio = 2.69) 7,989  
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