Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Agent H.	Find all Harold's notes.	25
Avid reader	Collect ten notes as Nicolas.	10
Awakening the Beast	Choice No. 2.	25
Bookworm	Collect all notes as Adam.	10
Boy with the matches	Collect 50 boxes of matches.	10
Breaking with the past	Choice No. 1.	25
Citizen of Blackstone	Unlock all achievements.	200
Closed ward	Ending No. 1.	20
Codebreaker	Solve the Enigma.	30
Cold Bastard	Defeat Walter Gilman.	70
Eagle Eye	Find ten hidden messages.	10
Erudite	Collect all notes as Nicolas.	10
Full tank	Collect fifty bottles of kerosene.	10
Ghostbuster	Chase away Norton's Ghost 10 times in the woods.	70
Gonzo journalist	Collect all newspaper clippings.	25
Housekeeping	Find the Key to the Attic.	10
Librarian	Collect ten notes as Adam.	10
Long Arm of Justice	Defeat John Norton.	70
Moth	Light 30 candles.	10
Newsflash	Hear every news message on the radio.	70
No noise	Shoot down all anomalies.	70
No secrets	Find all hidden messages.	70
Sparrow	Ending No. 3.	20
Spycraft	Ending No. 2.	20
The End of Madness	Ending No. 4.	20
The True Beast	Finish the game.	70
Where it all begins	Complete Chapter 1.	10