I like it! The art style is neat and I liked the silliness :)
Two notes: 1) The music stopped playing some time after I got to the scene after the boss. Maybe the audio file in your project isn't set to loop. 2) I think your health depleting as you fall off the map slows the pacing down of the game. There were a few times where I fell and I felt like I had to wait for a few seconds before I could continue playing. Areas below the tiles you walk on that auto-kill/respawn you when you touch them could help with that.
Nice job with the game!