For those interested - an achievement list has been leaked, apparently. It can be found on www.exophase.com.

The highlights of it are:
  • No looking back - you have to beat the game in Ironman mode (no reloading saves) on one of the two highest difficulty settings
  • Lone Wolf - Clear a UFO crash site with one soldier on Classic or Impossible difficulty. Note: You better make that a small UFO, me thinks. Unless SHIVs are allowed, we'll see
  • Our finest Hour - Beat the game on impossible difficulty
  • Wet Work - Complete a Very Hard abduction mission in five turns or less on Classic or Impossible difficulty.
  • A Continental Fellow - Win the game from each of the 5 starting locations. Note: This seems to imply that you need to play through the game FIVE times.
  • Ain't No Cavalry Comin' - Have a soldier survive every mission in a full game. Does that mean that soldier has to participate in every single mission in a game?