 FACT: Artistic license and suspension of disbelief notwithstanding,  there is a scientific oversight worth noting: the aliens POV is in  3D, despite the fact that its a cyclops. Literally, right out of  the gate, the otherworldly visitor distinctly has but one eyeball  and one pupil, when you need at least two (or a "beast with a  million eyes") in order to perceive stereoscopic vision.