The remaining crew decides to self-destruct the Nostromo and escape in the shuttle. However, Parker and Lambert are ambushed and killed by the alien while gathering supplies. Now on her own, Ripley initiates the self-destruct sequence but finds the alien blocking her path to the shuttle. She retreats, attempts unsuccessfully to abort the self-destruct, flees back to the shuttle with Jones, and narrowly escapes as the Nostromo explodes.
As Ripley prepares for stasis, she discovers that the alien is aboard, having stowed itself into a narrow compartment. She dons a spacesuit and flushes the creature out. It approaches Ripley, but before it can kill her, she opens an airlock door. The alien manages to hang on, but Ripley fires a grappling hook gun to push it out and then fires the engines, blasting it away into deep space. After recording her final log entry, she places Jones and herself into stasis for the trip back to Earth.