I enjoyed the style. The monster designs were very cool, did you model them yourself? And the choice of music was...interesting!
Having said that, I think this could use a little balancing. It'd be nice if there was more variety in the enemies. They all seem to just move towards the player, what if there was a type of enemy that shot projectiles or strafed around the player? Or one that you can only kill with a knife?
I'm not really sure what this has to do with the theme.