Nice job! Very relaxing puzzle game.
There were a couple puzzles in there where I didn't have to use all of the buttons, and I wasn't sure if I solved them correctly as a result.
I'd like to have a little more control over the jump mid-air, but it was still very manageable.
The game looks cool. So much reflection! I really appreciate having the second camera in the corner, especially when abandoning one of the cubes dangerously close to some enemies, or for keeping an eye out for the effects of a button press that my controlling character couldn't see.
GG!