I'm a sucker for phase-shifting, especially doing it midair. The puzzles aren't too complicate, but provide just enough thought as to not be obvious. I really like the vibe with the simple aesthetics and relaxing music. The floaty nature of the controls works with that vibe, too.
I would've liked some slight controls tweaking -- that is coyote time, a more variable jump -- and maybe just some slightly more complex puzzles, but you did an amazing job in the amount of time you had to make it. Congratulations.