The art style is really cute and cohesive in itself. Had to chuckle the first time i saw the player movement animation!
Audio and sound effects were also really cute and fitting well to the art.
Controls and movement felt solid for the most part. The player has a bit too much inertia (might be due to personal preference). The shop could use a controller friendly scheme, like a grid selection, otherwise fits well for keyboard and mouse controls.
I don't know if it's intended, but you can climb a wall with only one wall as soon as you get the dodge roll upgrade. Might lead to some unexpected path progression :D
Sadly I couldn't finish the game as I was able to softlock myself in the blue area where I encountered one of those bigger dark enemies with mushrooms on their head. I got myself pinched between the left wall and the enemy. There seems to be no damaging hitbox of the enemy reaching the player, so you could at least die and try again.
Overall solid first impression!