After working continuously for 3 weeks the result is here. 3D modeled in 3dsmax and textured in substance painter. Snow and rock textures/materials are created in substance designer. Rendered in Unreal Engine and use Photoshop for muzzle flash effect and post-processing. 
Check out my submission to Hum3D challenge and read the story behind this scene. 
Link: https://hum3d.com/challenges/die-another-day/