Here is the full list of all 54 Khet 2.0 achievements.
Beat a player who has the 'Khetmaster' achivement
Kill three pieces with one firing of the laser
Kill a piece by hitting it with more than one laser
Create a non-simple Ring of Fire
Kill off all of the opponent's destroy-able pieces
Knock out all 7 enemy Pyramids in one game
Beat the AI on Level 5
Beat the AI on Level 4
Beat the AI on Level 3
Fry both enemy Anubis pieces in one game
Beat the AI on Level 2
Beat the AI on Level 1
Your Pharaoh moves to its own death
Win 15 games in a row, online
Destroy the opponent's Pharaoh without reflecting off of any of your own pieces
Win a game in the "Osiris" board layout
Fire a laser which reflects off of 6 surfaces
Fire a laser which reflects off of 7 surfaces
Fire a laser which reflects off of 8 surfaces
Fire a laser which reflects off of 9 surfaces
Fire a laser which reflects off of 10 surfaces
Split the beam twice in 1 firing of the laser
Create an unending loop with the laser
Win a game in the "Isis" board layout
Win a game in the "Imhotep²" board layout
Win a Beamsplitter layout without using the Beamsplitter for the Pharaoh killshot
Win a Beamsplitter layout without using the Beamsplitter for any killshot in that match
Win a game in the "Dynasty²" board layout
Win a game by rotating your Sphinx
Shoot the enemy Pharaoh in the back
Win a game in the "Classic²" board layout
Lose an online game
Kill your own Pharaoh
Kill two pieces with one firing of the laser
Shoot your own Sphinx
Win a game in the "Imhotep" board layout
Win a game in the "Dynasty" board layout
Win a game while destroying 2 or fewer opponent pieces before their Pharaoh
Win a game while destroying 1 or fewer opponent pieces before their Pharaoh
Win a game by destroying ONLY the opponent's Pharaoh
Win a game without losing any pieces
Win a game in under 5 moves
Win 10 games in a row, online
Win 5 games in a row, online
Win 3 games in a row, online
Win your first online match
Win your first game against a human opponent
Win a game in the "Classic" board layout
Win a game in under 10 moves
Win a game using your Scarab for the kill
Shoot the enemy Sphinx - this does not kill it... it only perpetuates the myth about Napoleon ;)
Represent BlueLine to the fullest!
Fire over 9,000 laser beams!
Play 100 games