Complex sentence: Walter reactivates himself and fights David, allowing Daniels to escape while Lope is attacked by a facehugger; security member Cole saves Lope, but the now mature Protomorph attacks them and kills Cole.
Split into simpler sentences: Walter reactivates himself and fights David, allowing Daniels to escape while Lope is attacked by a facehugger. Security member Cole saves Lope, but the now mature Protomorph attacks them and kills Cole.