post-apocalyptic merchant, Fallout 4, rugged attire, gas mask, leather armor, scavenged goods, makeshift stall, Commonwealth wasteland, trading weapons, ammo crates, pre-war currency, barter action, dusty environment, ruined buildings, survival gear, Brahmin pack animal, ambient occlusion, warm sunset lighting, dynamic shadows, 3/4 view, detailed textures, gritty atmosphere, desolate urban backdrop, action pose, mid-conversation, atmospheric perspective, high-resolution rendering.