These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Ghouls Vs Humans
Nightmare Fuel: The ghouls, obviously. Even if you're one of them, you can still get startled by your teammates or by your own reflection in the mirror.
Paranoia Fuel: The Creeper is pretty much invisible while crawling along the ground. And he can follow you for a while, then pop up at any point and literally scare you to death.
The Scrappy: The "Santa Claus" class seemed to be highly unpopular, so it was replaced with the Engineer.