XCOM: Enemy Unknown achievements

XCOM: Enemy Unknown

4.3 from 3229 votes

There are a maximum of 55 XCOM: Enemy Unknown achievements (50 without DLC) worth 3,884 (1,100)

59,270 tracked gamers have this game, 693 have completed it (1.17%)

Achievement Details

Secret Achievement in XCOM: Enemy Unknown

Secret Achievement20 (10)

Continue playing to unlock this achievement. (Secret)

  • Unlocked by 15,034 tracked gamers (25% - TA Ratio = 1.98) 59,284  

Achievement Guide for The Volunteer

124,159 (68,875)
Achievement won on 11 Oct 12
TA Score for this game: 3,884
Posted on 17 October 12 at 12:30, Edited on 17 October 12 at 12:38
This solution has 10 positive votes and 4 negative votes. Please log in to vote.
The Volunteer

A Game Progression achievement, in order to continue the game and use the G????? C?????? you MUST equip them with Psi Armor. Only one person may do this so make sure to pick the right soldier for you. Using the Device levels up the Psionic Abilities of "The Volunteer" and you will be unable to remove "The Volunteer" or the Psi Armor for the final fight.
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