[[quoteright:240:http://static.tvtropes.org/pmwiki/pub/images/prometheus-face-melt-001_9847.png]]
[[caption-width-right:240:[[ImMelting Not even a helmet will protect you.]]]]

->''"[[GoneHorriblyWrong We were so wrong]]..."''
-->-- '''Elizabeth Shaw'''

Prometheus was always going to provide a large slice of BodyHorror given that it's set in the same universe as ''Film/{{Alien}}'', and that H.R. Giger returned to deliver new nightmares to the masses:

* The edit of Audiomachine's [[AwesomeMusic Judge and Jury]] for the trailer alone applies, complete with a {{Drone of Dread}}, the sirens from ''Film/{{Alien}}'' and {{Psycho Strings}}.
* The entire [[spoiler: Fifield and Millburn]] death scene. The tension when the creature first appears is bad enough but when it finally makes its move the scene quickly descends into unfiltered terror. [[spoiler:It bites Millburn's hand and proceeds to wrap around his arm so tightly it breaks it. Fifield panics at first but then cuts its head off, only to get acid blood in his face. The creature immediately ''[[HydraProblem grows a new head]]'', buries itself into Millburn's arm to get into his helmet, and then forces itself down his throat.]] All whilst [[spoiler:Fifield's]] helmet melts onto his face.
--> ''"CUT IT OFF! CUT IT OFF!!!"''
* The now-infamous scene of [[spoiler:Shaw's]] self-administered emergency surgery. [[spoiler: The tense buildup to the eventual cutting of the stomach and removal of the ''[[CosmicHorror thing]]'' she "births" is bad enough, but it gets even worse when it bursts out of its sac in the Medpod's claw inches from her face and ''starts trying to attack her midway through the surgery.'']]
--> '''David''': Well, doctor... it's not exactly a ''traditional'' fetus.
** For bonus {{Squick}} points she even ''rips the umbilical cord out with her own hands''.
** Bonus creepiness points for [[spoiler:this happening to the main character.]] No one is safe!
** The fact that this scene is so utterly claustrophobic!
** The whole scene is a hundred times worse if you're a woman. [[AdultFear Imagine every single fear you could have about childbirth all wrapped up in one scene.]]
** Not to mention if you already had a crippling fear of [[EverythingsSquishierWithCephalopods squid and octopus]] before seeing this film. Getting attacked by an alien squid? Bad. Finding an alien squid buried in your abdomen, and having to cut it out yourself? '''[[FromBadToWorse Worse.]]''' Cutting it out, and then being stuck in a tiny plastic coffin with said alien squid while it thrashes around wildly just inches away from your face? [[BringMyBrownPants GAH!]]
** The bit when [[spoiler: the amniotic sac bursts open and the amniotic fluid spills onto Shaw as she lies below the writhing, aggressive and clearly angry creature.]]
*** A 15-year-old teenager in Australia passed out and had a seizure during this scene and was rushed to the hospital. This sparked a discussion on the rating of the film in Australia, which had been lowered from an "MA 15+" to a more lenient "M" before its release to allow younger teens to watch the film.
** There's also the sudden swelling of her stomach, combined with sound effects.
* The scene where the infected Holloway looks in a mirror... and we get an UP-CLOSE shot of ''a mini tentacle growing from his eye.''
* [[spoiler:Holloway's death. He's clearly in terrible pain, and [[BodyHorror his head starts swelling large enough to nearly fill out his helmet]]. And then Vickers lights him on fire.]]
* The potential for an apocalypse. Not just [[spoiler: on Earth but across the galaxy given the nature of the monsters the Engineers create.]]
* [[spoiler:The attempt to revive the Engineer's head.]]
* [[spoiler:The Xenomorph's long awaited appearance. It's onscreen for less than a minute but makes it clear that despite everything we went through it's about to get a whole lot worse.]]
** The scene where [[spoiler:Weyland]], Shaw, David, and a few others wake up [[spoiler:the Last Engineer]]. Said [[spoiler:Engineer]] is not amused.
* The beginning of the film with David. He's been on the ship for two years with limited stimuli and no interpersonal interactions beyond dreams. Consider him going through the motions, repeating the same directionless routines, alone, for that long.
* [[spoiler:Fifield's]] return as a horrible, swollen-faced, super strong zombie who brutally slaughters several crew members with his bare hands, including one unfortunate soul whose chest he jumps on so hard that it causes the guy to vomit blood everywhere, before smashing his face into pulp with his fists. It doesn't help that they only manage to stop him by setting him aflame, pumping multiple bullets into him, and finally running him over with a truck ''twice''. A terrified crew member even shoots a final jet of flame at his burned corpse post-mortem, just to make sure he's down for the count.
** The way he walked back to the Prometheus was also horrifying, reminiscent of ''{{Film/TheExorcist}}''.
** Some might find the original design for his mutated form even more frightening. It resembled more of a human-xeno hybrid where his skull was extending backwards.
** The entire scene was reminiscent of ''Film/TheThing1982''.
* [[spoiler:The Proto-Xenomorph "Deacon"]] is even creepier than [[spoiler:most Xenomorphs since it's already human-sized when it emerges. It's also noticeably more humanoid than other Xenomorphs, which just makes it worse.]]
* The [[spoiler: Engineer being attacked by the Proto-Face Hugger.]] That thing grabs him and he's struggling against this [[spoiler: giant starfish tentacle monster EldritchAbomination]] that forces itself down his mouth.
* The Engineers themselves. Imagine finding out that humanity was created by super-advanced aliens, and that these aliens left signs clearly indicating that they wanted you to come and meet them. You head out there, eager to learn from these beings, wanting to study them, their knowledge, and their technology, and to have two species meet in peaceful contact. But when you arrive, and finally meet these beings, you discover that they're not peaceful. They attack you on sight, try to kill you, and clearly mean to destroy earth, the human race, and everyone you love and care about. And the worst part? No matter how much you beg for answers, no matter what you say, ''they won't even tell you why they changed their minds and want to kill you.'' You are just insects to them, parasites to be wiped out, and nothing more.
** ''Humanity'' may very well be this for the Engineers. Imagine that your experiments, which you've been keeping tabs on and plan to eventually dispose of, have taken on a life of their own, figured out their origins and discovered where you are. Not only that, they ''have the means to get to you.'' It's as if the parasites you're trying to wipe out could now literally walk up and threaten your very existence.

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