Cool concept, but...
It still has several flaws, at least in my opinion.
Firstly, the random seabirds bashing the skulls into a cliff? That was weird and not really necessary. That whole sequence had absolutely no reason for existing. At all. The same goes for the gratuitous bleeding sequences. They had no reason to exist, and so, likewise, you cannot justify their existence.
Also, while I know that anime-style depictions of people are very popular, I have to say that they don't look human. They look like someone did a gritty reboot of a Doctor Seuss book. Also, because they're so popular, there's no originality in them.
Finally, what was with those bizarre shadows over the eyes? If you wanted shadow, you should have made realistic shadow. Instead, you gave your viewers the impression that both of your characters were wearing for-fitting sleep masks. If you're going to do something, do it right. Your audience will appreciate it.
It's a good start, but it could've been a hell of a lot better.