Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
An Eerie Dream	Chapter One Completed.	25
Debts And Songs	Chapter Twelve Completed.	50
Defeat The Conspirator	Chapter Eighteen Completed.	125
First Exposure!	Chapter Ten Completed.	50
Friend of Foes	Chapter Seventeen Completed.	100
Jailed!	Chapter Eight Completed.	50
Morning at the Opera	Chapter Three Completed.	50
Mozart The Runaway	Chapter Thirteen Competed.	50
News Of The Emperor	Chapter Five Completed.	50
On The Road To The Palace	Chapter Four Completed.	50
Rude Awakening	Chapter Two Completed.	50
Shrouded In Mystery	Chapter Nine Completed.	50
The Gathering	Chapter Six Completed.	50
The Reversed Pyramid	Chapter Fifteen Completed.	50
The Secret of The Master	Chapter Fourteen Completed.	50
The Stone Bridge	Chapter Eleven Completed.	50
To The Heart Of Darkness	Chapter Sixteen Completed.	50
Unexpected Drama	Chapter Seven Completed.	50