Portal 2 achievements
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Portal 2

4.7 from 244 votes

There are a maximum of 51 Portal 2 achievements worth 960

6,342 tracked gamers have this game, 336 have completed it (5.30%)

Achievement Details

Dual Pit Experiment in Portal 2

Dual Pit Experiment13

Do the same test twice

  • Unlocked by 3,664 tracked gamers (58% - TSA Ratio = 1.31) 6,342  

Achievement Guide for Dual Pit Experiment

AuthorSolution
Yazz
14,819
Yazz
Achievement won on 09 Feb 16
TSA Score for this game: 529
Posted on 10 February 16 at 14:14
This solution has 1 positive vote and 1 negative vote. Please log in to vote.
Story related and cannot be missed.

This is achieved at the very start of Chapter 8.
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