First,as a word of warning, I don't play Warcraft.
I think the facial anatomy is very well done,you even remembered and properly placed the crease (whatever the real name for it is) above the lip and the chin looks excellent. I like how you colored and shaded his skin,it looks very realistic. His eyebrows are amazingly believable and his nose has a believable shape and realistic pinching. I also really like his beard and it's drawn extremely well.
I like that you included a background,it makes me more curious about him since he seems to be in a more modern setting.
My only problem is that the right side of his face looks too narrow and I think there should be differences in the light of his eyes from places where there's hair blocking and clear spots.
His hair seems too big for his scalp but maybe that's a Warcraft thing,I don't know. The texture seems more like paint than hair (too thick and with uneven gloss).
His arm should also be bigger.