Complex sentence: They retrieve Shilah's kit and Nial's gun and they try to leave the hold, but Jenny is attacked by an infected Captain Forrest and Nial shoots and kills him, but it seems that some of the captain's blood had gotten into Nial's eye.
Split into simpler sentences: They retrieve Shilah's kit and Nial's gun and they try to leave the hold. While in the plane, Jenny is attacked by an infected Captain Forrest and Nial shoots and kills him, but it seems that some of the captain's blood had gotten into Nial's eye.