Fun game!
I liked the upgrade system, going in I wasn't expecting a mechanic like that, it was cool to get more powerful as the game progressed. I won't speak too much on controls since pretty much everything's been said already.
I will say that sometimes hitboxes felt like they lingered/tracked a little too long? Felt basically impossible to avoid damage from the large skeletons sometimes. Maybe that's just a skill issue on my end.
But the models looked really clean, same with the animations - the time you put into them really shows!
And props for using Spiral Tones, I haven't heard that song in so long, I didn't recognize it at first!
Great work and thanks for submitting!