This one is brilliant! really good work!
-I like the pose!
-I love that you've played around with the proportions and caricatured it more than you usally do. The anatomy is still belivable eventhough you pushed it.
-The face is awesome! love the expression. I also like the angle you have on it, like were seeing it from below. some of your previous faces tends to be straight without "perspective" and apears to be flat as well as not feeling 100% conected to the body. But this one here is all good! It's bloody perfect
Not much crits, but one thing that I think you might want to tweek is the weapon and screen left arm. it seems to parallel to the camera view, lacking proper foreshortening
just a quick example (maybe you could use the colour values on those things as well to strenghten the foreshortening even more)
Edit: maybe some more saturated colours near the weaponlightsource?
added some red on top of the tigh area in an overlay-layer as one example