The amount of features in the game is quite incredible , and it feels very polished for a game jam game.
Unfortunately I feel like the pacing of the game was far too slow, and it didn't feel like there was enough skill expression to make me want to push for a high score.
With respect to pacing, I think the runs should be faster, and the player should die quicker.
With respect to skill expression, I'm not exactly sure, but maybe something like a big bonus for passing through/hitting specific points of interest in a short time period.
Add some extra juice to get some more dopamine flowing, create some interesting synergies between items, and I could definitely see myself buying this on steam for something like $5.
Great job.