really cool game! i love the graphics and its so cute!! its definitely very challenging but i like a good challenge.
i dont want to keep saying what everyone else is saying so ill keep it short:
-definitely more checkpoints! if there were more checkpoints i dont think youd need to adjust the difficulty too much
-the music is spot on and really great, along with all the sound effects
-the dash needs to be fixed, it made the ice level hard as balls. when you dash too far its so hard to recover and i often fell into some spikes and had to start again.
anyway really good job to your team, youve made something really wonderful that just needs a tiny bit of tweaking <3
EDIT: oh also in the ice cave, i think it would be cool if there was a mechanic so that when you get put into the ice block by the rolling snowballs, you can get yourself out. maybe if you spam dash a bunch of times you can break out of the block?