Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
A Crisis Averted	Attain the "Good" Ending.
A Day of Defeat	Attain the "Bad" Ending.
Bliss Always Escapes Me	Complete the 8th level.
Enlightened	Unknown.
I Must Go On!	Complete the 7th level.
Into the Dark Abyss	Complete the Introduction.
Nostalgia, my old Friend	Complete the 4th level.
The Hardships of Life	Complete the 3rd level.
The Moments that Kill Me	Complete the 6th level.
The Other Side	Complete the 9th level.
This is my Family	Complete the 5th level.
Unattained Dreams	Complete the 2nd level.
Unrequited Love	Unknown.
What lies in the Past?	Complete the 1st level.