There's some neat world lore here!
Proper nouns, meet my death cannon. Oh wait, where's my death cannon? I'm getting kulingaed hard over here. It took me three replays to realize it was in that first crate. I think your level design would work a lot better if you blocked progression with a destructible of some sort and had the crate right in front of it, so the player couldn't progress until (1) learning how to interact and (2) get the weapon.
Your dynamic music system is killer.
I'd love to see a version of this with a bunch more game juice and some cool dodge mechanics for encounters.