Aight
I'm not a fan of Madness.
I'm a fan of Rhunyc's Madness fan-art.
Your pics capture an extra 1-dimension of drama, action and sheer epicness in a single scene.
This pic Hank is just blasting away at some unknown which produces a bucket load of gore. The dynamicism of the pic is all down to the diagonals - the flow of blood, the direction of the (gorgeously detailed) rifle, and the fall of the bullets. Not to mention the gritty colours you've decided to use.
My negative criticism is petty, since you shouldn't add/subtract much more to this pic. One is that I think you could have shaded/highlighted the head scarf a bit better, since the first thing I look at is either Hank's face, or the exploding barrel of the rifle.
The second is the size of the canvas - it's too tall! I think it might be easier to understand if you treat the rifle as a line that splits the canvas in half. It's an odd trick, but it helps enclose your character within the canvas. I think it would also keep most of the good bits within the centre third of your pic.
Summary: Yeah it's good and stuff.