It's Good to see you took this guy further, Ricky. I can't comment on the normal mapping, but as far as the diffuse, I second what Moose said. A little more color variation in the face would go a long way. Also, anything you can do to visually separate the plates of the armor more would help a lot as well, -specifically…
looks pretty sweet! cant relly see the specular however, maybe you could go to lighten it up on the darker metal with maybe some orange-yellow or blueish hues? The transition from spike to shoulder pad seems a little jarring, could maybe go for some additional detail there, of either an indentation, bolts, extra metal…