liked the sound and music in your game. Good features like jumping under a block let you keep jumping for ever as long as your head hits the block. Weird that if you run off the level you die restart and it sends you to a new area not sure if that was intentional or not. The score text on the game over screen should probably set to auto size since my score broke the line and had a zero on the line below nothing major.
I did find the enemies spawning right on your head some time annoying but what can you do in a short time frame it is hard to test for stuff and make a game in that time frame I struggle with balancing and bugs my self way more then I want to admit on my game jam games.
All and all good job on your game slow down on the cookies as well lol.