I liked the concept a lot. The speed that the player moves and jumps was too slow for me, but if you continue working on the game, it would be easy to add powerups that increased the pace if you wanted.

I tried the last boss a few times but I finally gave up. I felt like I had to memorize the sequence for the fight and then also execute it pretty perfectly, and eventually I got sick of playing the first part of the fight over and over.