Mass Effect 3 achievements

Mass Effect 3

4.6 from 9852 votes

There are a maximum of 68 Mass Effect 3 achievements (50 without DLC) worth 2,264 (1,550)

112,938 tracked gamers have this game, 12,907 have completed it (11.43%)

Achievement Details

Last Witness in Mass Effect 3

Last Witness29 (25)

Extract ancient technology.

  • Unlocked by 86,639 tracked gamers (77% - TA Ratio = 1.14) 112,938  

Achievement Guide for Last Witness

52,578 (39,510)
Achievement won on 09 Mar 12
TA Score for this game: 1,253
Posted on 10 March 12 at 08:46
This solution has 20 positive votes and 2 negative votes. Please log in to vote.
This is part of the story. You get this when you go to Thessia(Asari Homeworld). After you power up the Prothean Beacon, Kai Leng with attack you. After he steals the data and runs there is a cut scene and you get the achievement
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