If you take a look at the vast majority of the videos on the internet, they are very dark. Your addition of sound was nice, but the "blood", really took away from the quality of your work. Instead of being captured by the story, I found myself just pondering if it was a truly intentional effect. If it was, as you say it is, I think a little more effort could've gone into it. With anything you add, you must note if it will subtract from the overall "feel". Have some peers go over it, that's what I tend to do when doing something experimental. Nicely done, you've definitely have the potential.