The visuals and the audio are great! There are a few things I would say are hurting the gameplay however. The speed combined with the camera doesn't work so well. Because the camera follows way behind when you run, I'm practically looking behind me and can't see anything in front. I feel like this is meant to be a fast paced action game, but that camera makes feel like I have to take baby steps just to see what's in front of me. I think the combat is ok, but I can tell it would have been great with a little more feedback. When your attack hits, giving some kind of audio queue, hit flash, particle effect, or even a "clash" animation with some bounce back would have made the combat feel so good. As it is, I was unsure most of the time if my attacks were even doing anything.
The BEST part of this game by far is the boss. I love the boss behavior patters and the variety of actions. Definitely has a much more enjoyable experience fighting the boss, and again it would have been SO much more awesome with that attack feedback.