I just have this to say. at first i was very annoyed by the sequencing of the upgrades. but after a while i changed my mind. it became a new thing to do, even if i had all ready done it it gave me something to do while i was grinding for cash so that i could afford upgrades.
also i think that when you stop there should be a feature when you run back and have to doge left and right to avoid cops and bombs but get money for killing normal gummies. then at the end you could jump up onto the ring and then it could go to the finish round screen. just my two cents hope you see this developers thanks for reading