Cool concept with the switch from 2D to 3D and vice versa. The transition was also nicely done.
Controls were a bit slippery, and I often fell off blocks because of that. A bit more friction or more control over the player would be nice. The power-ups were strange. Even more crazy power-ups would be a fun bonus. Graphically, it looked good, and the music fit the puzzle atmosphere.
All in all, a unique concept, fun puzzle game and well made in time available. Keep it going💪!