For a Game Jam game, this is incredibly polished! The visuals and sound design are both great, and the combat later on feels really satisfying. Considering this was made in just four days, you’ve done an amazing job.
The theme is really interesting as well. I think this gameplay loop has a lot of potential to be expanded into a full game.
The only issue I ran into was that my mouse cursor disappeared in the main menu. I’m not sure if this is a bug or something.