This game is also available on PC.
Retro Game Tips for XCOM: Enemy Unknown (Xbox 360)
Achievement: No Looking Back
When:
During game
How:
Beat the game in Ironman mode on Classic or Impossible difficulty.
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Achievement: Humanity's Savior
Achievement: Earth First
Achievement: Our Finest Hour
Achievement: Lone Wolf
When:
During game
How:
Clear a UFO crash site with one soldier on Classic or Impossible difficulty.
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Achievement: Bada Boom
Achievement: Welcoming Committee
Achievement: Pale Horse
Achievement: Shooting Stars
Achievement: Ain't No Cavalry Comin'
When:
During game
How:
Have a soldier survive every mission in a full game.
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