That is a wildly ambitious concept for a jam! :D Congrats for actually delivering something working here! I'm impressed.
I couldn't test the multiplayer aspect of the game but as a singleplayer it is brutally hard and after multiple attempts I was only able to land a single hit on an enemy before I died miserably. xD
Would love to see this concept improved upon though. Think it has potential to be a super fun experience when played with friends. :)