Pretty good job for a first jam! The visuals were nice and clear and I especially liked the sprites. Maybe the environment could've used a bit more detail or color but not bad either. At first the "raise the sword" mechanic stacking points confused me and seemed like a bug but as more enemies pile on, it can make for a nice risk reward system.
The bit crunch effect seemed a bit too much for me personally, I would tone it down just a tad but it might just be a subjective thing. Still enjoyed the music regardless.
It's a simple game but I don't really have much to complain about. It works just fine and can be decent fun so I'd say it's a job well done. Maybe it could fit the theme a bit more but that's it. I also like the name of the game ^^