Was I the only one who felt just looking at the side scrolling section that it was done in the old 90's sort of way (with sprites instead of models)? I don't know why, but those chained spiked balls just seemed off.
Anyways, I've seen more mature games with similar amounts of blood (Prototype, God of War, Dante's Inferno, and of course Gears 2, which had a much more sickening amount), but they didn't seem to obsess over it like this game does. Yeah, they all did play around with it, but they move on to things such as huge amounts of HSQ, brutality, questioning morals/choices, amazing environments, etc. Purely focusing on blood seems a bit old fashioned (unless your character is able to control it as a power rather than it fueling their power. Then I expect something like that).
Looks like at best a rental.