Portal achievements
303
(150)

Portal

4.5 from 258 votes

There are a maximum of 15 Portal achievements worth 303

6,481 tracked gamers have this game, 479 have completed it (7.39%)

Achievement Details

Rocket Science in Portal

Rocket Science35

Earn silver medals on all Portal challenges.

  • Unlocked by 545 tracked gamers (8% - TSA Ratio = 3.45) 6,481  
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