I love the art and -most- of the animation. To be honest, I think the armor-knight-enemies, for how burly they look, lack alot of punch in their animations. Maybe some subtle shake or something if they attack near you, I'm not sure what would fix it.
Same thing with the sound effects. While I love the background music, I feel like the combat sounds don't do justice to how big and powerful the weapons feel -visually-. Especially when you strike enemies, it just doesn't feel very satisfying. Splitting them in half is plenty satisfying, however.
I love the overall UI design. I might suggest doing something a little different with the font. It's super clean and readable, which is great, but I feel like the super-clean-white-sans-serif kind of clashes with the overall gothic theme that's going on.
Visual effects are great. Particles look very nice.
Keep up the good work!