Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Agent Muriel Green Files ( 25 points )	Complete The Path of Souls on Hard.
Antadurunnu Dossier ( 20 points )	Complete The God Seal on Hard.
Arnold Leach Dossier ( 20 points )	Finish Al Khali - Complete Al Khali on either Easy or Normal.
Blind Behemoth Dossier ( 30 points )	Complete Morituri te Salutant on Hard without being incapacitated.
Bishop Maltheus Dossier ( 15 points )	Finish Crusades - Complete Crusades on either Easy or Normal.
Brother William of Auxerre Files ( 20 points )	Complete Motley Crew on Hard.
Cpt. Devin Ross Files ( 15 points )	Grasshopper of Battery - Kill 50 enemies using Melee Attacks.
Corpses Behemoth Dossier ( 20 points )	Complete Rivers of Blood on Hard.
Centurion Tertius Longinus Files ( 30 points )	Complete Decadence on Hard without being incapacitated.
Cpt. Xavier Jones Files ( 20 points )	Complete Man Down on Hard.
Cpl. Simone Cole Files ( 20 points )	Complete The Tomb on Hard.
Cultist Dossier ( 30 points )	Master of Battery - Kill 100 enemies using Melee Attacks.
Crossbowman Crusader Dossier ( 20 points )	Complete Tortured Souls on Hard.
Child Crusader Dossier ( 30 points )	Complete Imperium on Hard without being incapacitated.
Deceased Devin Ross Files ( 5 points )	Complete Still With You on Hard.
Enlil Sumerian Demon Dossier ( 20 points )	Complete Spiritual Guide on Hard.
Explosive Cultist Dossier ( 10 points )	Grasshopper of BOOM - Disintegrate 50 enemies.
Fr. Paul Rawlings Files ( 20 points )	Master of Pop - Pop 100 heads.
Flamethrower Dossier ( 25 points )	Master of BOOM - Disintegrate 100 enemies!
Flying Cultist Dossier ( 50 points )	God of Pop - Pop 250 heads.
Governor Cassus Vicus Dossier ( 20 points )	Finish Rome - Complete Rome on either Easy or Normal.
Gladiator Dossier ( 20 points )	Complete Temple of Pain on Hard.
Grenadier Dossier ( 25 points )	Master of Ghost - Kill 100 enemies using Ghost Bullet.
Inanna Sumerian Demon Dossier ( 20 points )	Complete Skin on Hard.
Legionary Dossier ( 20 points )	Complete The Low Road on Hard.
Ki Sumerian Demon Dossier ( 20 points )	Complete Flesh on Hard.
Lt. Abigail Black Files ( 10 points )	Grasshopper of Ghost - Kill 50 enemies using Ghost Bullet.
Machinegunner Dossier ( 50 points )	God of Ghost - Kill 250 enemies using Ghost Bullet.
Ninlil Sumerian Demon Dossier ( 30 points )	Complete Skin on Hard without being incapacitated.
Nanna Sumerian Demon Dossier ( 20 points )	Complete Blood on Hard.
Operation: Godseal Files ( 20 points )	Complete Exorcism on Hard.
OSS British Commandos Files ( 50 points )	God of BOOM - Disintegrate 250 enemies.
Pyxis Prima Dossier ( 25 points )	Finish Sumeria - Complete Sumeria on either Easy or Normal.
Psychic Commander Dossier ( 10 points )	Finish World War 2 - Complete World War 2 on either Easy or Normal.
Sir Richard de Grey Dossier ( 20 points )	Complete Out of the Frying Pan on Hard.
Sgt. Frank Delgado Files ( 10 points )	Grasshopper of Pop - Pop 50 heads.
Sumerian Puppet Dossier ( 30 points )	Complete Flesh on Hard without being incapacitated.
Sgt. Wilhelmina Church Files ( 20 points )	Complete Al Khali on Hard.
The Firstborn Portfolio ( 55 points )	God of Battery - Kill 250 enemies using Melee Attacks.
The Jericho Team Portfolio ( 30 points )	Complete Rivers of Blood on Hard without being incapacitated.
Utu Sumerian Demon Dossier ( 30 points )	Complete Blood on Hard without being incapacitated.
Warrior Crusader Dossier ( 20 points )	Complete Sewers on Hard.