Epic cinematic 8k wallpaper depicting Ellen Ripley from the Alien movie, captured in an intense action pose amidst a dark and eerie spaceship corridor; her eyes show determination and courage as she grips a futuristic weapon; dim, foreboding lighting casts dramatic shadows, accentuating her fierce expression and the ominous alien environment; subtle green and blue hues enhance the atmosphere, with the corridor's metallic textures glistening under the scattered emergency lights, evoking a sense of suspense and impending danger.