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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.

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You have to find another inventor's invention, steal it, and claim it as your own. –  SaintWacko May 2 '13 at 20:15
@SaintWacko Indeed :7 –  Zommuter Aug 29 '13 at 8:35
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1 Answer

up vote 7 down vote accepted

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

That is required for getting the achievement.


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Yes, I just couldn't see it, but you're right. I had a Heavy Floater Interrogated, but not a Floater. Thanks! –  Django Reinhardt May 2 '13 at 21:10
@DjangoReinhardt - Your list is also missing "Interrogate Muton Elite". –  Jason Berkan Aug 28 '13 at 16:16
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