Here is the full list of all 12 Luxor 2 achievements worth 200 gamerscore. It takes around 150-200 hours to unlock all of the achievements on Xbox 360.
Awarded for matching 12 or more spheres with a single shot.
Awarded for putting together 5 chain reactions.
Awarded for completing a level without losing a life.
Awarded for completing Adventure Mode on the Easy difficulty level.
Awarded for collecting 100 pieces of gems and jewelry.
Awarded for completing Adventure Mode on the Normal difficulty.
Awarded for achieving a perfect rating on all bonus rounds.
Awarded for completing Adventure Mode on the Expert difficulty level.
Awarded for completing the Challenge of Horus.
Awarded for earning the play rank of Pharaoh of the Two Lands.
Awarded for collecting 15 or more coins in a single level.
Awarded for completing a level with 100% accuracy.