How do I get the "Edison" achievement in X-Com?



  • I believe I've researched everything. This is what I have researched so far, and I'm at the very end of the game:

    • Xeno-biology
    • Arc Thrower
    • Outsider Shard
    • New Fighter Craft
    • Hyperwave Communication
    • Ethereal Device
    • Weapon Fragments
    • Alien Materials
    • Experimental Warfare
    • Elerium
    • Psi Armor
    • Carapace Armor
    • Skeleton Suit
    • Titan Armor
    • Ghost Armor
    • Archangel Armor
    • Beam Weapons
    • Precision Lasers
    • Heavy Lasers
    • Plasma Pistol
    • Light Plasma Rifle
    • Plasma Rifle
    • Heavy Plasma
    • Plasma Sniper
    • Alloy Cannon
    • Plasma Cannon
    • Fusion Lance
    • Guided Fusion Launcher
    • Alien Nav Computer
    • UFO Power Source
    • EMP Cannon
    • Interrogate Sectoid
    • Interrogate Muton
    • Interrogate Sectoid Commander
    • Interrogate Berserker
    • Interrogate Thin Man
    • Interrogate Heavy Floater
    • Interrogate Ethereal
    • Autopsy Sectoid
    • Autopsy Sectoid Commander
    • Autopsy Floater
    • Autopsy Thin Man
    • Autopsy Muton
    • Autopsy Chryssalid
    • Autopsy Cyberdisc
    • Autopsy Berserker
    • Autopsy Heavy Floater
    • Autopsy Muton Elite
    • Autopsy Drone
    • Autopsy Sectopod
    • Autopsy Ethereal

    Have I missed one or is the game bugged?

    I'm playing on the Windows/Steam version.



  • According to your list, you did not interrogate a Floater.

    That is required for getting the achievement.

    http://www.xbox360achievements.org/game/xcom-enemy-unknown/achievement/69356-Edison.html#3




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