I love the art and the sound effects!! makes it feel like a kind of retro arcade game, a very effective and enjoyable game even if it doesn't have much depth and it sticks to the brief
There seemed to be some things you could hit and some you couldn't and it wasn't easy to tell which was which (edit: just noticed it says a bit in the description and I totally missed it!! mb), I'm not quite sure how but my character also got knocked over though that didn't really impact my gameplay too much
As for improvements: Maybe add a menu or some instructions on how to play the game (even some pop-up text that appears to explain it), the speed boost didn't seem to do much + maybe make the objective of the game more clear (is it high-score based? do you need to get a certain amount of points? etc) Really nice game though!!