Portal achievements
299
(150)

Portal

4.5 from 279 votes

There are a maximum of 15 Portal achievements worth 299

6,861 tracked gamers have this game, 527 have completed it (7.68%)

Achievement Details

Rocket Science in Portal

Rocket Science34

Earn silver medals on all Portal challenges.

  • Unlocked by 591 tracked gamers (9% - TSA Ratio = 3.40) 6,861  
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