Very fun concept, and very interesting use of sprite stacking. I hadn't seen it used in a game with a game boy aesthetic before, and the result is very trippy.
I really like the idea of running over a bunch of pumpkins! Although I feel like the audio could have benefited from a more "squelchy" sfx for this. The pure white noise crash sound works fine for hitting obstacles, but can get quite grating when smashing multiple pumpkins at once or in quick succession.
I'm also not sure I grasp how to deal with the final boss, I kept getting stuck in a sea of gourd and running out of fuel.
In general: love the art, the vibes and the little narrative; found the controls a bit fiddly, but ultimate fun to master; and enjoyed the industrial, metallic texture of the music, but feel like it could be toned it down for some of the sfx.
Very unique entry, good job!