This is what survival horror is supposed to do: scare the heck out of you.
It's not just Kotaku's Tina Amini who got profoundly disturbed by The Evil Within. Bethesda put a bunch of non-industry folks in front of the upcoming Shinji Mikami game and recorded their reactions to the gory proceedings. Their jumps and freakiout faces are funny to see. But, as for info as to what they're reacting to, that will have to wait when the game comes out.