Really cool theme interpretation! At least in my view, the game might feel a bit nicer if the handling on the root was a bit more responsive. Other than that, I really liked how each run felt a bit different because of getting to choose upgrades. I liked the fire rate one a lot, especially because it helped deal with the boss attacks!

Cool premise, explain what each of the little blobs do in the description. 

Your dirt texture is a bit bright and hard to see on. Maybe turn it down a bit.