The art is very lovely, I like the kinda baba is you vibe and the soundtrack that makes me think a bit of undertale ..
I am pleasantly surprised, works with a controller .... oh no kinda, AWSD and Menus dont
clever puzzles with exciting good music .. about level sequence, yeah there seems to be steps missing between introducing new mechanics ... one thought I had is ... instead of moving to the next mechanic, bring bigger more complex puzzles that use the same already learned mechanics .... there is an amazing recent game that could also help you with level progression in this type of puzzle, see the analysis GMTK made a couple of days ago