Fun game! The art is amazing and the gameplay is great!
With a bit more polish, the game could be a hit!
I would recommend splitting the levels and slowly introducing mechanics and puzzles to the player. I don't know of any other game that introduces a boss in level 1 ahah. It felt quite brutal to make my way to the boss, and as I was trying to learn the attacks, I died and had to start from the beginning.
Otherwise, I adore this game! Congrats and good luck!