Cute and challenging game. The visuals are perfect! There is obviously a lot of polish put into the graphics, characters, sound and animations making the game feel very professional.
I think the game could be improved if mechanics were not introduced so often. It felt like there was a tutorial on every level. Progression would feel smoother if a mechanic was introduced and then the player had a chance to play with it for a couple of levels before adding a new one. And then add some levels mixing the mechanics.
I also though the human characters preset path made the puzzles feel like trial and error. It would be nice to have some indication on how to solve the puzzle without having to play it through first.
A couple of minor UI/UX improvements: When retrying just reset the path by default. Having to undo the moves seemed like a needless step. Clicking Done and then play also felt like a pointless extra click for the player. Oh and I couldn't find an exit button in any of the menus!
Really great effort! You have a very polished looking game on your hands!