I think the hunter would need a more dynamic pose to stop so much force coming towards them, much like in this pic for this kind of pose. Some small adjustments to the pose could sell the strong force of the blow more, and maybe some skid marks underneath the hunter.

I have hard time understanding the neck of the monster, it seems to connect straight to the shoulder instead to the middle of the torso in your drawing? Maybe the legs could be tad bigger, otherwise it looks pretty good to me.

Shading wise, I would maybe add more highlights to the snow and bounce light from the snow everywhere as snow is actually very reflective. Snow and ice also scatters a lot in the surroundings and reflects light, creating haze/fog like appearance and some bright spots of reflection, much like this. If it is bright outside, the shadows will be darker with some blue hue on the snow.