Really impressive work! There's a lot put into this game given the jam period, and I really appreciated the depth to it. The art, gameplay and music meshed together really well, and this game felt like something that, after being built on more, would be a really viable commercial release!
I enjoyed Rabarbar and Alhazred's fights, but I found the Spear Saint fight really really difficult given the weapon range and attack cooldown and I wasn't able to finish it. I would also recommend maybe using a color palette next time, as I feel like it would give a consistent feeling to the graphics that would really tie them all together.
Overall, great work! :D