I once decided it was a bright idea to buy and play Amnesia: A Dark Descent. I lasted about 30 minutes until I locked myself in my room with all my flashlights, lamps, and household items that could be used as weapons.
Amnesia: A Machine for Pigs was even worse for me. The pigs are truly horrifying and disgusting, and I was never able to lead Oswald Mandus far enough into the game to learn what "The Machine" was. Those stout of heart may be able to complete the game, but not without questioning their dedication to this seat-jumping game.