Dark Sector - Platform: Xbox 360

Brutal mode:
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Successfully complete all ten chapters to unlock the Brutal difficulty.

Achievements:
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Accomplish the indicated achievement to get the corresponding number of 
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:
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  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.