Epic cinematic 8k wallpaper of Ellen Ripley, expression a mix of resolve and fear, from the iconic Alien movie. She's clad in a tank top, captured in a wide-angle, action-packed half-body shot. Beads of sweat gleam on her forehead and cheeks. Positioned with her back firmly against the wall of the Nostromo space shuttle, in a dimly-lit room. A sci-fi ambience enhanced by ray tracing and rim light; ultra detailed and cinematic, with a stoic, movie-quality feel. The setting is dark and moody, with lumen reflections and ambient lighting in 4k resolution. The scene employs Rembrandt lighting, high contrast, and shallow focus, featuring RTX ray tracing effects. The ultra-realistic look is achieved through octane render, presented in stunning 8K.