* NightmareFuel: The scene in which Dr. Kyne is observing the Marker then looks up into the ceiling to see a Necromorph has been watching him from the air duct. It stares back for a moment, then scuttles off into the bowels of the ship. Doubles as ParanoiaFuel.
* NightmareRetardant: It's almost NightmareFuel-worthy, but the dated CGI ends up killing that and sends it into this trope.