Dark Sector - Brutal difficulty

Achievements:
Complete the following achievements to unlock Xbox Live Gamerscore points.

Prologue 10 points: Complete Chapter 1.
Exposure 10 points: Complete Chapter 2.
Baggage Claim 10 points: Complete Chapter 3.
Moths To The Flame 10 points: Complete Chapter 4.
The Shipment 10 points: Complete Chapter 5.
The Bait 10 points: Complete Chapter 6.
Industrial Evolution 10 points: Complete Chapter 7.
Unnatural History 10 points: Complete Chapter 8.
Threshold Guardian 10 points: Complete Chapter 9.
The Dark Sector 100 points: Complete the Game.
Dark Sector - Brutal Difficulty 110 points: Complete the Game on Brutal Difficulty.
Headhunter 10 points: Decapitate 30 Enemies.
Incinerator 10 points: Incinerate 30 Enemies.
Electrician 10 points: Electrocute 30 Enemies.
Jack Frost 10 points: Kill 30 Frozen Enemies.
Finesse 40 points: Kill 30 enemies with Aftertouch.
Hardball 35 points: Kill 30 enemies with Power-throw.
Sharpshooter 10 points: Get 30 Headshots.
Glaive Master 10 points: Complete a Level by Only Using the Glaive.
The Finisher 10 points: Perform 30 Finishers.
Double Decap Latte 15 points: Get Two Decapitations In One Shot.
Skeet Shooter 10 points: Shoot 10 Projectiles in Mid-flight.
Weaponsmith 10 points: Apply 5 Upgrades in the Black Market.
Greed 10 points: Collect over 50,000 rubles.
Researcher 10 points: Collect 10 Weapon Upgrades.
Master Researcher 15 points: Collect All the Weapon Upgrades.
Rebound 15 points: Kill an Enemy With a Reflected Projectile.
Glory 30 points: Finish Best Overall in a Ranked Infection Match Multiplayer.
Veteran 30 points: Score 500 Points in Ranked Infection Games Multiplayer.
Hero 40 points: Score 2000 Points in Ranked Infection Games Multiplayer.
Champion 30 points: Finish Best Overall in a Ranked Epidemic Match Multiplayer.
Comrade 30 points: Score 500 Points in Ranked Epidemic Games Multiplayer.
Hero of the People 40 points: Score 2000 Points in Ranked Epidemic Games Multiplayer.

Additionally there are five secret achievements.

Colossus 50 points: Defeated the Colossus.
Stalker 65 points: Defeated the Stalker.
Secret Achievement 85 points: Defeated Nemisis.
Ghost 35 points: Used Shifting to get a finisher.
Jack the Jackal 35 points: Took the Jackal for a ride.