Sometimes the simplest games can be the most fun.
The only things I can think of to improve this are to add some more sounds, add in a way to recover health as the game progresses and maybe make the initial increase in speed a bit smoother. The other speed increases were fine but the speed change between starting the game and the first speed jump felt a bit of a jump, one moment you can casually dodge the rain, the next you go from no coffee to 300 cups.
Thanks for the game.