Black Mesa scientist, male, lab coat, glasses, messy hair, serious expression, holding a clipboard, Half-Life universe, underground laboratory, complex machinery, dim lighting, emergency lights, steel structures, concrete walls, 3/4 view, high-resolution textures, detailed environment, ambient occlusion, dynamic shadows, action pose, mid-action, running, hazard suit, Vortigaunt, Xen flora, immersive atmosphere, wide-angle lens.