I played the demo and didn't like it, so I skipped buying the game. I loved the Penumbra games, however. Amnesia had too much of a "forced" feeling to it, like it was dictating when I should be scared. There were plenty of times in the demo when my character was practically having a heart attack and shitting himself at an "unsettling" moment, but I, as the player, was not scared in the least. I was like, "Oh, please... NOT scary." Besides that, it also forces you to hurry through the game because staying in the shadows too long makes you insane. Stupid idea. However, the dumbest idea has got to be the "teeth grinding" effect. Fucking please... that's not immersive people... it's motherfucking ANNOYING.
Trust me, piracy is not the only reason sales is suffering for this game.