I liked the puzzles, very clever. However I didn't enjoy the controls, felt a bit off (maybe too slow?) and I know that there's not much platforming here, but the jump was very floaty and had to be pretty precise in order to hop on a higher platform.
Also I believe I completed one of the first puzzles by just having two characters standing on buttons with just one or two pixels left (so barely and it felt like I cheated but I just rolled with it ;))
Anyways, the game was super fun to play, nice job!