Most disturbing areas/moments

[Time]

Spoiler below!

I have to say the Choir area and the torture chambers; even those that aren't in the Choir room. There weren't any enemies, but by the beak of Ra they were freaky. Lighting the fire beneath the Bull scared the human kabobs out of me, even though I was kinda expecting it. Didn't help that you can't open the bull after that.

That one note that detailed how to torture people was particularly disturbing.

Oh, hearing a monster, believing it to be in front of you, then turning around and running straight at it is scary as hell.

And what is this Grunt/Brute creature everyone is talking about? I only ever saw those deformed zombie things, and I've "beaten" (more like survived) the entire game. Are those the grunts, or are there two visible foes...?