Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Aaron and Katja (10 points)	Cleared Act 0.
Endless Nightmare (60 points)	Survived the Endless Nightmare.
Escape From the Grasp of Evil (30 points)	Obtained an A-Rank in Act 10, Scene 1.
Fight or Flight (30 points)	Obtained an A-Rank in Act 10, Scene 3.
Friend or Foe? (10 points)	Cleared Act 4.
House of Madness (10 points)	Cleared Act 3.
Live to Tell the Tale (30 points)	Obtained an A-Rank in Act 10, Scene 2.
Master Sleuth (50 points)	Found all of the Detective's Tapes.
Master of the Nightmare (60 points)	Cleared the "TORTURE" difficulty without dying.
Nightmare Defeater (50 points)	Cleared the main game on the "No Mercy" difficulty level.
Nightmare Escapee (30 points)	Cleared the main game on the "Humane" difficulty level.
Nightmare Vanquisher (100 points)	Cleared the main game on the "Torture" difficulty level.
Sharp-Eyed Traveler (20 points)	Discovered all "Secret Events."
Stirrings of Death (10 points)	Cleared Act 8.
Tarot Master (50 points)	Obtained all Tarot Cards.
The Forest (10 points)	Cleared Act 5.
The Nightmare (10 points)	Cleared Act 6.
The Survivors (10 points)	Cleared Act 2.
The Train (10 points)	Cleared Act 1.
Viktor (10 points)	Cleared Act 7.