Things that would have made Amnesia scarier

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Just more variation of monster would be nice.

I agree - but the funny thing is, when I played through Amnesia for the first time, I didn't even notice there were two types of monsters. (not counting the Kaernk) I was too much of a coward to ever get a good look at either of them, so I simply assumed that there was only one monster type. Had to read the wiki to find out there were two