epic portrait an giant space marine walking on a dead world full of rocks and hills, digital painting, artstation, concept art, soft light, hdri, smooth, sharp focus, illustration, fantasy, intricate, elegant, highly detailed, d&d, matte painting, in the style of greg rutkowski and alphonse mucha and artemisia, 8k, highly detailed, jurgens, rutkowski, bouguereau, pastoral, rustic, georgic, detailed concept art, illustration, colorful pastel, painting, detail, ultra detailed, digital art, 4k, unreal engine 5, 16k resolution,