Really nice gameplay and visual style. I thnk there's a lot going on so it lag spikes from time to time, and I think for some reason it might do it more often the first time through the level at certain intervals, but not so much the second time through the same level, such as after dying and trying again.
I really liked that the gamepad is supported.
On the second level I wanted to use the Restart Level feature from the menu since I missed the first boost somehow, but that was a mistake as it turns out it doesn't work and the game just stops working after selecting that, so I should simply reload the page and start over. There are a few bugs like that which should be fixed if the game is ever updated after the jam, probably starting with key ones like that.
I don't think it's game breaking enough to be ok to update during the jam under this jam's rules, because the game is still probably playable as long as the feature simply isn't used, so it might not be critical or game breaking enough to fix it for now, but it might be one of the first places to start fixing if the game is ever updated after the jam.
I might consider playing it again and seeing if I could finish it because I really like the game a lot, great job on this!