Believe it or not, it looks flat. Imo it would look better if you blurred bits to add depth. Otherwise, I have no complaints.
I think it looks like the light is coming from in front of him rather than from the gun. Darkening the front of the shield and any areas that would not be directly lit by the hunter's gun should give it more depth.
Depth is badly needed here. The lighting is also a bit off, as said above, and I find it too untouched, too plain. A little bit of gradient map love wouldn't hurt. Nice job with the gun effects.