animations on the player would have worked better if you had done teh same thign as the enemies and I noticed that you had the projectile get destroyed upon colidiong with anything including antoher projectile and your jump seems to funciton of OnCollsionEnter2D alowing you to jump on the undersides of platforms and just slide up the sides of them if you are touching them but dont change direction models and 2d looks a bit wierd when the models are just floating on nothing and health pickup is something you can jump off appart from those things its a nice little platformer