XCOM: Enemy Within achievements

XCOM: Enemy Within

4.6 from 832 votes

There are a maximum of 30 XCOM: Enemy Within achievements worth 1,735 (1,000)

9,600 tracked gamers have this game, 882 have completed it (9.19%)

Achievement Details

They Shall Not Pass in XCOM: Enemy Within

They Shall Not Pass27 (20)

Eliminate all alien waves

  • Unlocked by 5,448 tracked gamers (57% - TA Ratio = 1.32) 9,632  

Achievement Guide for They Shall Not Pass

796,907 (356,075)
Achievement won on 17 Nov 13
TA Score for this game: 1,417
Posted on 17 November 13 at 04:09
This solution has 11 positive votes and 0 negative votes. Please log in to vote.
Non-spoiler version: This will be shortly after the mission "Assault the Alien Base," which comes as story progression. There will be an unskippable battle later; complete this mission to earn this achievement.

Spoiler version:
*** Spoiler - click to reveal ***
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