Brutal mode:To unlock brutal mode, complete all 10 chapters.Achievements:ACHIEVEMENT – HOW TO UNLOCKPrologue (10 points) – Beat Chapter 1.Exposure (10 points) – Beat Chapter 2.Baggage Claim (10 points) – Beat Chapter 3.Moths To The Flame (10 points) – Beat Chapter 4.The Shipment (10 points) – Beat Chapter 5.The Bait (10 points) – Beat Chapter 6.Industrial Evolution (10 points) – Beat Chapter 7.Unnatural History (10 points) – Beat Chapter 8.Threshold Guardian (10 points) – Beat Chapter 9.The Dark Sector (100 points) – Beat the Game.Dark Sector – Brutal Difficulty (110 points) – Beat 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) – Beat 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 in Multiplayer mode.Veteran (30 points) – Score 500 Points in Ranked Infection Games in Multiplayer mode.Hero (40 points) – Score 2000 Points in Ranked Infection Games in Multiplayer mode.Champion (30 points) – Finish Best Overall in a Ranked Epidemic Match in Multiplayer mode.Comrade (30 points) – Score 500 Points in Ranked Epidemic Games in Multiplayer mode.Hero of the People (40 points) – Score 2000 Points in Ranked Epidemic Games in Multiplayer mode.Colossus (50 points) – Defeat the Colossus.Stalker (65 points) – Defeat the Stalker.Nemesis (85 points) – Defeat the Nemesis.Ghost (35 points) – Used Shifting to get a finisher.Jack the Jackal (35 points) – Took the Jackal for a ride.