This is a really well-made and charming game! Love the quality-of-life features many jams neglect like a makeshift tutorial with the notes, intro cutscene, and pause menu. The dark souls roll is something I've never seen translated into 2D and I think you did a great job at making it purposeful and fun. I also really like the consistent theme+tone, sprites, animations. The UI could use some work to look more thematic.
My only complaint is minor and it's that I feel the boss with the knives has unfair hitboxes. When I'm standing at the center of him I'm still able to get hit with his knives despite his knives appearing way over to his sides. I can feel a lot of Dark Souls inspiration and I like the difficulty in general, but that's something I thought was a bit unfair.