Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
CHAPTER III	You've completed the chapter III.	50
CHAPTER II	You've completed the chapter II.	50
CHAPTER IV	You've completed the chapter IV.	50
CHAPTER IX	You've completed the chapter IX.	50
CHAPTER I	You've completed the chapter I.	50
CHAPTER VIII	You've completed the chapter VIII.	50
CHAPTER VII	You've completed the chapter VII.	50
CHAPTER VI	You've completed the chapter VI.	50
CHAPTER V	You've completed the chapter V.	50
CHAPTER X	You've completed the chapter X.	50
EMILY	You've found all the Emily's music boxes.	100
FINALLY FREE	You've completed the story.	100
GUNSLINGER	You've killed three enemies with headshots.	50
HEALTHCARE	You've used a medikit.	50
PHONE CALL	You've answered all phone calls.	50
SUICIDAL THOUGHTS	You've tried to do something stupid.	50
THANK YOU DEAR PLAYER	You've watched credits without being forced.	50
WHAT'S THAT TASTE	You've drunk some sewer water.	50