Nice idea and game !
I find some problems about the difficulty:
I had to read the comments to see the 2 buttons and even after that I didn't get what to do in the first screen. The explanations comes after, in the level 1.
The first screen ("level 0") and the level 2 are way more difficult to pass then the next levels.
(Also, there is no difference between "Help" or "Start")
I think the level 2 should be before the level with the text "Flavor is Burst" because he's a bit similar and easy when you understand the mecanic but very hard if you don't get which path to take.
I gave up against the chocolate boss.
I didn't see the lifebar become smaller after a hit so I tough you have to jump to attack him above the paper...
Then I replay the game.
I find that he sometimes attacks without warning but mainly he requires too much hits !
After many hits his lifebar was small but I gave up cause I was then get hitted (by walking too much...)
I liked that the enemies change direction with the player.