duotone olive detailed comic panel illustration of us army soldier fighting a demon, set in gigantic ancient catacombs with runes on the walls, dark fantasy, sigils, magic, composition accidental renaissance golden ratio, stunning action poses, cinematic, by artgerm sachin teng and sergey kolesov and ruan jia and heng z and wlop. graffiti art, scifi, fantasy, hyper detailed. octane render. concept art. trending on artstation