Ok, the ragdoll effect got me haha! Not quite a metroidvania, though. It's fun and it works, but might lack a bit of variety.
Maybe I can just give you one thought (take it or not, that's just my point of view):
While I don't know how much time you spent on the map, I think you could have spent more time implementing at least one more weapon or traversal mechanic and made it a smaller environment.
It was fun and I hope my comment makes sense to you. Nice entry anyway, not easy to enter a jam alone!