Epic cinematic 8k wallpaper of a resolute and intense Ellen Ripley from the Alien franchise, wearing a weathered and grime-streaked white tank top, captured in a dynamic half-body action pose. Her forehead and cheeks glisten with sweat, and the close-up shot is photorealistic, showcasing her fierce determination. The image boasts cinematic, movie-quality visuals with VFX enhancements, leveraging RTX ray tracing for dramatic lighting. Ultra-realistic and hyper-detailed, the scene is presented in HDR and 8k resolution, as though shot with a Mitchell BNC camera and rendered using Octane, giving it an authentic and vivid appearance that captures the essence of a sci-fi epic. Ripley's expression and the environment evoke a tense and immersive atmosphere, blending iconic elements with a modern touch.