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 completing Adventure Mode on the Easy difficulty level.
Awarded for achieving a perfect rating on all bonus rounds.
Awarded for collecting 15 or more coins in a single level.
Awarded for completing a level with 100% accuracy.
Awarded for matching 12 or more spheres with a single shot.
Awarded for collecting 100 pieces of gems and jewelry.
Awarded for putting together 5 chain reactions.
Awarded for completing a level without losing a life.
Complete Adventure Mode on the Normal difficulty.
Complete Adventure Mode on the Expert difficulty level.
Complete the Challenge of Horus.
Earn the play rank of Pharaoh of the Two Lands.