XCOM: Enemy Unknown achievements

Gain all trophies.

Win the game from each of the 5 starting locations.

Beat the game without buying a Squad Size upgrade (Classic+ difficulty)

Beat the game on Impossible difficulty.

Beat the game in Ironman mode on Classic or Impossible difficulty.

Field a squad with 4 augmented soldiers, each with a different base ability and win the mission

Clear a UFO crash site with one soldier on Classic or Impossible difficulty.

Designate a highly decorated soldier as the Volunteer.

Have a soldier survive every mission in a full game.

Field a squad consisting entirely of augmented soldiers and SHIVs (min. 4) and win the mission.

Field a squad where all members have at least two modifications (min. 4) and win the mission

Shoot down 40 UFOs.