A definite 5 in my book. Great rendering on the armor and the lighting is spot on, though I think adding some really sharp highlights here and there would bring out the edges on the armor and boost the contrast to a good level. The only thing I'd have to comment on is his pose. It looks a little stiff, mostly because his limbs are all slightly bent to some degree. He doesn't look relaxed standing there.
Sorry if this is the first of several people to tell you this, but this reminds me of the classic Legacy of Kain. Not that that is a bad thing. :) His expression seems to imply that he's more of a vampire than a knight in personality, unlike Kain who was mostly a knight who happened to drink blood.
Haha, that's funny) Originally, it was used as a concept of one of Kain's new armors for LoK:BO 3D remake =D
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