A scorching afternoon sun casts a golden glow upon the robotic mech's metallic body as it unleashes hellfire in a close-up shot. The mech's assault rifle, grasped firmly with both hands, belches flames and smoke from the nozzle as each bullet is fired, causing the weapon to quiver violently. Practical lighting emphasizes the intense action, blurring the background while spotlighting the chaos. Nozzle flash illuminates the surrounding air, motion blur captures the relentless pace of battle, and realistic combat details like dust, sparks, and explosions from the firing add to the ultra-detailed 8K image's photorealistic grandeur.,fantasy robot