Interesting concept. I will say I did have a few runs where no enemies would spawn and was forced to restart.
Looks - Very nice level design. When I didn't have any enemies I was able to explore and look around. The different areas and such were nice. Lighting was nice.
Sounds - Good sound effects.
Camera - Not a fan of the motion blur and movement.
Controls - Felt slow to attack. Spamming mouse button and then moving I would be attacking a good 3-5 seconds after I stopped clicking.
Feel - Character felt weak. Not sure if that was intentional. Easily swarmed by enemies.
Movement - Would like an option to walk backwards and still face the enemy. Made me unable to attack while backing away and kiting the enemy.
Still very fun to play, just not for long periods as the camera motion was not it for me.