Fun idea and I'm happy to see another endless runner in the jam! I like the art and the style. Sound effects work good and the concept works well also.
The game doesn't change much which is missed in a runner type game in my opinion. Many runners do difficulty scaling by making it speed up as time goes by. Yours is unique in that it spawns enemies to fight while you run so simply spawning more enemies or more difficult enemies (or even more obstacles) would work as well. Even if it doesn't get too much harder, it would be good if there was some variety in play. ATM the loop is just spamming mouse1 while moving in a circle and once every 400 points or so you accidently touch a rock and lose a health point. I did run into the 500 end bug but no big deal with that ofc.
Good job with the game!