This is a stunning piece of work. I was very drawn in by the colors. The highlight on his face draws me in to the picture, and then the highlight on his spear helps to move my eyes through the entire picture. The background is very appropriate in creating a mood of conflict and turmoil, while the lone figure emphasizes that it is his struggle. I think that, if there is one thing I may like to see improved, it would be to define the shadows and highlights around the crotch area a little more, as it is it's almost blending in with the color of the ground.
You put a lot of details on him! I like the fur you put on his glove; it's a really nice touch that you just can't see zoomed out. I don't know what material the torso is covered with, but it looks fantastic. You did extremely well dealing with two different colored light sources, it looks very natural, but I think you should work a little more definition into the inner thigh. The spear looks completely realistic, but maybe define the fingers on his right hand a little more. And lastly, for some reason, I'm really attracted to his knees. I think I'm just being special though XD
THAT IS SOO DEATAILED!!! Your technique is marvelous! His left (from our view right) leg is a little blurry though... And he doesn't really look like he was must making a carnage. He just looks a little tired.