Haunting Ground/Nightmare Fuel

• Fiona starts off the game with amnesia, in a cage, surrounded by instruments clearly used for torture and butchering, and wearing nothing more than a sheet.
• Each of the stalkers fits this trope in some form.
  • Debilitas is three times the size of Fiona and can’t speak coherently, reducing his mindset to that of an infant. Many players seem to find his antics funny until he knocks Fiona over, whereupon he can pound her body to a pulp or pick her up in a bear hug, which crushes her ribcage.
  • Daniella’s maniacal laughter and screams.
    • If she manages to grab Fiona’s hand, Daniella starts laughing in an odd tone and stands completely still while Fiona desperately tries to get away.
    • When Daniella spots Fiona, she may hiss at her.
  • Lorenzo is a dirty old man who can’t walk, but get him on his hands and he becomes the fastest character in the whole game. Then he regains his youthful appearance and can teleport right in front of Fiona. He also has instant-kill attacks.
• The stalkers' chase themes.
• Let Fiona die at the hands of her pursuers. Although the player won’t see anything other than the game over screen, they will hear Debilitas tearing Fiona apart limb from limb, Daniella ripping Fiona’s uterus out of her body while laughing hysterically, Riccardo dropping his pants and raping Fiona’s dead body, and Lorenzo sucking out her Azoth. You might want to turn the volume down.
• The music in the game, while sparse, is chilling in its own right. Then you realize that the music has stopped, and one of your pursuers is on the other side of the door you were about to open.
• Most of the Death Traps. Even if nothing is really shown, you hear enough to know exactly what happens.
  • Special mention to the beetle swarm trap.
• Examine the figure sitting on the couch in the old mansion - it's a mummy. If you leave the room and then go back to it, the mummy will be in a different position. Yeah, it moved.
• DEAD WOOLLY MAMMOTH IS WATCHING YOU
• The strange hand that comes out of the crypt in the graveyard. Seriously, what the hell is that thing?!? Made even more horrifying when you give it a white mandragora and hear the thing being eaten alive. When it's done, you can hear something shuffling away... Kinda makes you not want to go down there after all.
• There are two cutscenes that the player can receive after playing through the game once. The first is before the Riccardo battle, where an unconscious Fiona is being given an ovulation test by him after he’s obviously stripped her down and redressed her (in a dirty gown, mind you). The second is immediately after the same battle, where Lorenzo crawls to Riccardo’s body and sucks his Azoth out.
• If you go into the kitchen near the beginning of the game, you can trigger a cutscene where Fiona watches as Daniella stirs a pot. When she lifts the ladle, a red liquid drips down from it...along with what appears to be blonde hair. Go back to the kitchen later on when Daniella isn't in there and examine the pot; Fiona herself will say that it looks disturbingly like human hair. Remember Fiona's mother? Take a moment to let that sink it.
• In the old mansion during Daniella's chapter, Fiona finds a room with a carousel inside. She returns to it after moving some rooms around to find it bloody and rusty.
• The corpse in the torture room, which is apparently still alive. Go on, try to take the key from it before solving the puzzle.
• Panic Mode. You have little control over Fiona as she runs around slamming into walls. There's a good chance that she'll also fall over and remain helpless on the ground for an extended period of time. The creepy voices in the background repeatedly saying 'Fiona' don't help. And did I mention that the screen goes black and white?