Portal 2 achievements
961
(510)

Portal 2

4.7 from 270 votes

There are a maximum of 51 Portal 2 achievements worth 961

6,838 tracked gamers have this game, 364 have completed it (5.32%)

Achievement Details

Dual Pit Experiment in Portal 2

Dual Pit Experiment13

Do the same test twice

  • Unlocked by 3,925 tracked gamers (57% - TSA Ratio = 1.31) 6,838  

Achievement Guide for Dual Pit Experiment

AuthorSolution
Yazz
15,209
Yazz
Achievement won on 09 Feb 16
TSA Score for this game: 530
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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