As others mentioned, hitboxes should never be larger than the sprites, otherwise it feels unfair to lose. It is even better to make them smaller than the sprites, although that might be a bit difficult for this game jam. The game also does not fit to the frame on the page, so you should try to play a bit with its size in the itch.io project settings.
There is one bug I randomly found: somehow the audio played twice over itself. Unfortunately, I don't know how it happened. It seems there is nothing else bugged in the game.
Gameplay-wise I really liked how when the player loses, the level just immediately starts over again. However, I did not find any way to exit the level. It might look like it doesn't matter, since you have to beat the level to progress, but its niceer to have more control over the game as a player.
Last thing: the sprites have "flickering" pixels when they move. That is of course alright with the game jam rules, but it doesn't look pleasant. I believe that in Unity you can set something like "Fix sprite renderer to the grid" in the settings of a pixel perfect camera, so that could help.
I almost forgot about the music, which I really liked.
Good job on making a functional game. It might have some flaws, but it's nothing that can't be improved.