Portal 2 achievements
946
(510)

Portal 2

4.7 from 293 votes

There are a maximum of 51 Portal 2 achievements worth 946

7,337 tracked gamers have this game, 410 have completed it (5.59%)

Achievement Details

Professor Portal in Portal 2

Professor Portal27

After completing co-op, complete Calibration Course online with a friend who hasn’t played before

  • Unlocked by 1,008 tracked gamers (14% - TSA Ratio = 2.69) 7,337  
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