- Jules' death, brutally having her head sawn off like a tree stump.
- Holden is stabbed through the throat by one of the redneck torture zombie family members.
- The still-animate dismembered zombie arm reaching for an unconscious guy's head as elevator doors close.
- The entirety of "The System Purge (aka The Carnage)". Can you even imagine being trapped down there with almost every nightmare creature imaginable?
- In just the first scene of The Purge alone, we see a tree spewing blood after consuming a security guard, one guy gets devoured whole by a giant cobra, a killer robot scorpion slicing someone with it's buzzsaw tail, and another guy literally getting ripped in half by gleeful "Dismemberment Goblins◊".
- Are you afraid of clowns?
- Bulletproof clowns?
- One of the most horrifying things contained in the cells is Kevin. Kevin is a seemingly ordinary Stepford Smiler with the power to drain people's blood. To make matters worse, it's never explicitly stated how he drains said blood...
- One poor guy literally gets his soul sucked out, and then is taken away to who-knows-where, to have who-knows-what done to him. While everyone else has really painful deaths, at least they die, and their suffering ends. That may never happen to him.
- There's one guy crawling on the floor slowly being pursued by a Stringy-Haired Ghost Girl who sings an Ironic Nursery Tune to her intended victim. We also never see her face...and that's probably a good thing.
- Getting impaled by a unicorn, yikes!
- Tarantulas are scary as they are, imagine a 50-foot one.
- Two people held against their will are pleading for their lives as they're about to be tortured by the "Hell Lord" and his minions (akin to The Cenobites from Hellraiser)
- Judging from his name, it doesn't sound like he wants to kill them.
- To clarify in case you didn't click the link, his full name is Fornicus, Lord of Bondage and Pain. Oh God.
- The Hell Lord, a reference to Pinhead from the Hellraiser series, one of the "throwaway" monsters given the most screentime. Like Pinhead, he is a tall, pale bald man dressed in bondage leathers, but instead of pins, his skull has been filled with sawblades. He even holds his own puzzle box, though this one is spherical, rather than square like the Lament Configuration. Whats really creepy is that you never see just what his methods are, but if they are anything like his predecessor, it would make the rest of the Carnage look like childs play.
- "The Merman", can you say Nightmare Face?
- Just before their deaths, Mission Control are looking at a whole lot of small screens which are showing various people being killed by the various nightmares/creatures. Don't look too hard at these small screens. You won't like what you see. One of them shows a man being repeatedly and forcibly vomited on (what is presumed to be a corrosive acid of some kind) by what looks like mutant hospital zombies. A man gets suffocated in a plastic bag by a crazy man. One woman, out of fear, is Driven to Suicide and shoots herself. One guy gets "operated on" note by the Evil Hospital Doctors. The Doll Mask Killers tie up a group of people, pour gasoline on them and drop a match as they leave the room. A woman is stalked by a monster she doesn't notice. A man is set on fire by a pumpkin-head creature.
- The Sugar Plum Fairy. She looks like a little girl in a ballerina dress... except that instead of a face, she has a hideous, enormous lamprey-like mouth (possibly inspired by Pan's Labyrinth or the works of Guillermo del Toro).
- The creepy scarecrow men attacking and tearing the security guard to pieces.
- The giant octopus. Especially for people with an irrational fear of them plus the fact that they should NOT be making crunching noises.
- It's not just any octopus; it's The Kraken.
- That fucking wolf head. Just as all the other monsters have triggers, it is blatant foreshadowing to the Werewolf's release.
- And of course, the incredibly unsettling, silent Dolls, presumably based on the creepy serial killers from The Strangers. Who are seen on a monitor circling some tied-up facility people and preparing to burn them alive.
- It's hard to spot amidst everything else (and because the Angry Molesting Tree is in the way), but the third elevator back on the left side of the opening Carnage attack is the one the non-redneck-torture-family zombies came out of. The first few tackle and pile onto a couple of the soldiers, and then several more come out to join the feeding dog-pile. And then more. And then more. And then more. That particular cubicle must've been packed to the ceiling with zombies.
- Speaking of zombies, in a Freeze-Frame Bonus, one can see a Boomer, a Witch, a Tank, a Smoker and a Hunter in the cells. That is terrifying in and of itself, but the question remains: where did they and all the other zombies come from? Are they traditional zombie forces, or an example of The Game Come to Life?
- And last but not least The Ancient Ones.
Nightmare Fuel / The Cabin in the Woods
Since Nightmare Fuel in a movie like this involves deaths, unmarked spoilers below. Read at own risk.