Mass Effect 3
Game
2,316
(1,550)

Mass Effect 3

4.6 from 5831 votes
 

62,321 tracked gamers have this game, 7,614 have completed it (12.22%) | 138 want to boost

There are a maximum of 68 Mass Effect 3 achievements (50 without DLC) worth 2,316 (1,550)

Achievement Details

Executioner Achievement in Mass Effect 3

Executioner28 (25)

Offline Required - This achievement requires play in offline game modesSingle Player - This achievement can be obtained in single player game modesMain Storyline - This achievement is gained automatically by progressing through the main game mode
Defeat an old adversary.

0.0Achievement won by Professor Pedro on 08 April 2012

Achievement Guide for Executioner

AuthorSolution
Almighty Allah
96,070 96,070 GamerScore
Almighty Allah
Achievement won on 10 Mar 12
TA Score for this game: 1,068
Posted on 11 March 12 at 08:03, Edited on 11 March 12 at 21:44
This solution has 13 positive votes and 9 negative votes. Please log in to vote.
Spoilers!

This achievement is for defeating Kai Leng after you attack Cerberus headquarters. It is part of the main quest so you cannot miss it because you need to go there in order to get a certain item. Once you enter the illusive mans room Kai Leng will appear and you just need to beat him in order to get the achievement.
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