Simple and fun! I wish it had a little more variety (maybe boss enemies every once in a while or something) but the core is there and it's very enjoyable for what it is.
The art is super cute! It was a bit frustrating at points when I had to wait for flies to spawn low enough at a roadblock but overall the gameplay feels nice and keeping the momentum going when you're in big mode is a great little challenge.
Really fun! I especially love the music, and it's crazy impressive that you did everything yourself. The movement feels very polished - I did wish sliding down walls was just a touch faster in a couple spots, but that's a really minor thing.