first-person shooter game character, Counter-Strike Source, tutorial level, male, tactical gear, helmet, camouflage uniform, assault rifle, aiming, crouching position, indoor shooting range, wooden targets, concrete walls, fluorescent lighting, dynamic shadows, mid-action, realistic textures, high-resolution, detailed environment, close-up, HUD interface elements, intense expression, strategic positioning, clear instructions, interactive elements, bullet casings, reloading animation, digital camouflage, military boots, focused stance, tutorial prompts, virtual training course, ambient sound effects, 3/4 view.