I love the art style and animation, great job on that.
Enemies need some more hit feedback, impact, flashing, or some kind of reaction.
SFX on the hits also would have been nice.
I died at level 43 or something like that, and levelling had really slowed down significantly. I didn't get the sense of scaling either by that point. And the boss didn't have an HP bar to know at what point I should try to go back in and fight him again, or if I really did have to grind out to level 100.
I think only the arrows actually hurt me in general, since the others were well telegraphed and slow but arrows would randomly surprise me.
It was fun but too long, and I wish I could've fought the boss for real.