Hmm.
Gotta say, I can't find Amnesia scary.
Not in the bloody least.
The mobs spawn in, wander around, and then despawn. And don't come back, giving rise to situations that flow thusly:
Mob: Rawr!
Me: Oh shit! *flee* *hide*
Mob: Rawr? *walks away*
Me: Phew. Sonnovabitch is gone. Now, let's follow him and throw a rock at...where the hell did he go?...no...no...no...no...What the hell. This is a closed corridor.
Repeat this a few times, and it dawns on you that the mobs are all one trick ponies, and the fear factor plummets.
Or is that just me?
And the "Evil fleshy wall thing" crap hasn't been scary since Alien.