Well, game is GREAT, im playing almost non stop from yesterday premiere (Europe).
But i noticed that sometimes i get no blood at all, i cutt off guards head and there was no blood, only small splash, at other one i get blood and pool of blood.
It's normal? Im not a bloody maniac but i want to know how it looks in Your game? (And yes im not living in the germany , so i don't have black blood or something : ) )

I never really noticed before, seems pretty bloody to me but I'm attempting a non-lethal playthrough so I haven't killed too many people past the beginning.

I haven't noticed that either and I've seen a High Chaos playthrough.

I can't kill anyone, so aside from the unbelievable amounts of blood Weepers cough up I don't have any blood anyhow.

Now that you mention it, it does seem to be a bit less bloody than it should be.
I mean, unless for some reason the evolution of man on this world left them with under a litre of blood.

I think's it's a bug because I have seen lots of gory messes.