This is a BIG step up from the Shift I remember. I legitimately got stuck on a lot of the puzzles, especially in chapter 2.
The bevel effect is overused, the animations when you enter doors is a little long which is annoying, and it's easy to get stuck and have to replay long chunks of levels which can be more tedious than challenging, and the pushing and gravity mechanics are kind of par for the course for a lot of puzzle platformers. However, when the puzzles started involving manipulating the gravity and color of the boxes the game really came into its own and felt genuinely challenging and engaging.
Double Hole is currently bugged; if you push the box into the shift icon, it doesn't actually flip/change color.