Here is the full list of all 12 XXZ achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Finish Level 12
Finish Level 11
Finish Level 10
Finish Level 9
Finish Level 8
Finish Level 7
Finish Level 6
Finish Level 5
Finish Level 4
Finish Level 3
Finish Level 2
Finish Level 1