What part of Amnesia scared you the most?

[sourceman]

This game is and has been rated one of the scaryest games of all time. Share your stories with the community. beware of spoilers. if you can try and keep them at a minimal spoiler, not major.
this is mine.

-going to the guest room.
-go into the room with THAT part.
-suddenly i hear a monster burst through the door.
-it's 3AM and im wearing headphones.
-hide in the closet.
-hear the things breathing and freak out in real life.
-it finally goes away.
-as in the game, my head is pounding and my hands are shaking.

That was something i wasn't expecting.