prehistoric warrior (muscled, fur loincloth, longsword) is attacked by a long-necked dinosaur-like monster (open mouth with fangs, bright red eyes), swamp, enormous trees, hanging vines, gloomy, (best quality), 8k, action, best quality, Boris Vallejo style, Comic book style, digital painting, dramatic lighting, Dungeons and Dragons atmosphere, epic masterpiece, epic scene, fna_style, full body, heroic fantasy, high quality, masterpiece, photo realistic oil painting, realism, realistic, reduced saturation, retro art style, retro oil painting style, RetroSci style, scary, score_8_up, score_9, score_9_up, surreal mood, ultra realistic, very detailed