Portal 2 achievements
961
(510)

Portal 2

4.7 from 266 votes

There are a maximum of 51 Portal 2 achievements worth 961

6,810 tracked gamers have this game, 360 have completed it (5.29%)

Achievement Details

Party of Three in Portal 2

Party of Three29

Find the hidden companion cube in co-op test chamber

  • Unlocked by 835 tracked gamers (12% - TSA Ratio = 2.85) 6,810  
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