Carbon Costume 
Adrian Shephard from Half-Life: Opposing Force
Colonel Adrian Shephard is the main protagonist of the video game Half-Life: Opposing Force. Colonel Shephard is a member of the United States Marine Corps sent to Black Mesa Research Facility to help eliminate alien invaders. Shephard wears white camo with a green tactical vest, camouflage helmet, and a gas mask. To recreate his mask, you can use some window tint film to update a cosplay mask with clear lenses, which is much easier to find.
