XCOM: Enemy Unknown achievements

XCOM: Enemy Unknown

4.3 from 3316 votes

There are 55 XCOM: Enemy Unknown achievements (50 without DLC) worth 3,891 (1,100)

60,812 tracked gamers have this game, 705 have completed it (1.16%)

Achievement Details

Secret Achievement in XCOM: Enemy Unknown

Secret Achievement17 (10)

Continue playing to unlock this achievement. (Secret)

  • Unlocked by 21,383 tracked gamers (35% - TA Ratio = 1.68) 60,892  

Achievement Guide for Secret Achievement

282,554 (173,410)
Achievement won on 24 Oct 12
TA Score for this game: 851
Posted on 24 October 12 at 21:21, Edited on 24 April 14 at 13:26
This solution has 7 positive votes and 0 negative votes. Please log in to vote.
You must first research:

New Fighter Craft.
Prerequisites to even having this as an option are owning both a Alien Nav Computer and a UFO Power Source. Both can be found in alien UFOs (wether downed or landed).
Also, in order to research this you will also have to consume:
75 Weapon Fragments
10 Alloy
10 Elerium

Once the research is complete, your Engineering will be able to build the Firestorm. Below are the minimum requirements to build this and claim your achievement! Of course, like most things you build, the more engineers you have, the cheaper the item will be.

Research: New Fighter Craft
Engineers: 20
Cost: $125
Elerium: 40
Alien Alloy: 60
UFO Power Source, UFO Flight Computer x2
Days to Build:14
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