Master Chief in armor, dynamic pose, holding an assault rifle, intense expression, battle-worn, Covenant enemies in background, sci-fi cityscape, explosions, plasma fire, Halo ring visible in sky, dusk lighting, high contrast, action-packed scene, detailed armor texture, energy shield glow, alien technology, futuristic weapons, epic battle, heroic stance, full-body shot, dramatic angle, dynamic lighting, high-resolution, detailed environment, legendary difficulty emblem.