Mass Effect 2 achievements

Mass Effect 2

4.7 from 14254 votes

There are a maximum of 62 Mass Effect 2 achievements (50 without DLC) worth 1,769 (1,355)

144,446 tracked gamers have this game, 20,848 have completed it (14.43%)

Achievement Details

Treason in Mass Effect 2

Treason11 (10)

Gain the loyalty of the quarian

  • Unlocked by 115,299 tracked gamers (80% - TA Ratio = 1.11) 144,446  

Achievement Guide for Treason

457,325 (275,576)
Achievement won on 21 Apr 10
TA Score for this game: 1,769
Posted on 01 October 10 at 21:08
This solution has 18 positive votes and 4 negative votes. Please log in to vote.
High Paragon/Renegade is almost a must for this loyalty mission because part of the mission revolves around a court trial. If you turn in the evidence about Tali's father she will not be loyal to you.
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