Here is the full list of all 34 The Orb Chambers REMASTERED achievements.
Completed level 1
Completed level 2
Completed level 3
Completed level 4
Completed level 5
Completed level 6
Completed level 7
Completed level 8
Completed level 9
Completed level 10
Completed level 11
Completed level 12
Completed level 13
Completed level 14
Completed level 15
Completed level 1 on hard mode
Completed level 2 on hard mode
Completed level 3 on hard mode
Completed level 4 on hard mode
Completed level 5 on hard mode
Completed level 6 on hard mode
Completed level 7 on hard mode
Completed level 8 on hard mode
Completed level 9 on hard mode
Completed level 10 on hard mode
Completed level 11 on hard mode
Completed level 12 on hard mode
Completed level 13 on hard mode
Completed level 14 on hard mode
Completed level 15 on hard mode
Completed level X
Completed the BONUS level
Found your Future self.
Completed the game on Normal