PICO-8 is nice, especially since it means controller support is automatic! I did find the SFX a bit odd, since they continue to play for as long as you’re holding the jump button rather than just once (and also at the end-screen where nothing moves at all).
The use of the term “mobs” for “the red areas that hurt you” was also somewhat of an interesting choice — it wasn’t clear to me that those were meant to be enemies rather than just floor-hazards.