Ah, sick concept. I've def played some older games that had this kind of thing going on, maybe Lawnmower man on the SNES is the first I can think of. I think it's a great start for something that could be really fun. Here are some suggestions if you move forward with this one:
- Powerups/Collectibles or money scattered about - maybe even a dash ability you can unlock or something
- Perhaps some moving obstacles with different colors
- UI feedback for how far you've gone (maybe it is there, but I have ultrawide monitor so could be getting cut off?)
Anyways, I had fun, and did you compose the music yourself? Nice stuff.