XCOM 2

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A Grim Key achievement in XCOM 2

A Grim Key

Recover a Codex Brain

A Grim Key0
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How to unlock the A Grim Key achievement

  • Lt DavoLt Davo
    01 Oct 2016 01 Oct 2016 01 Oct 2016
    This is an unmissable campaign progress achievement. If all goes well, you will unlock it during the same combat mission where you use the skulljack on an Advent officer and unlock
    XCOM 2With Extreme PrejudiceThe With Extreme Prejudice achievement in XCOM 2 worth 13 pointsSkulljack an ADVENT Officer


    After you hack the officer, a new enemy called a codex will appear. This enemy has the ability to clone itself. You must kill all of the codices and then complete any remaining objectives for that mission. After you have done so and earned a success for that mission, the achievement will unlock.
    Showing only comment. Leave a comment.
    Hirsute DaveJust for the record, they also teleport (so overwatch is of limited use), and have a large AoE attack that empties the magazines of any unit caught in radius. The attack will also do significant damage to anything still standing under the template at the end of the turn; killing the Codex won't stop the detonation.
    Posted by Hirsute Dave on 01 Oct 16 at 07:46
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