| Achievement | How to unlock
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| Absolute Threshold ( 25 points ) | Achieve the Gold weapon upgrade rank on the Insanity difficulty.
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| Astraphobia ( 25 points ) | Complete one level in Story mode while only using Shock Therapy.
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| Aversion Therapy ( 15 points ) | Complete a level on any difficulty without dying.
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| Bomber ( 5 points ) | Kill 100 Enemies while using the Dream Cleaner.
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| Breaker ( 5 points ) | Kill 100 Enemies while using the Hailstorm.
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| Conjurer ( 5 points ) | Kill 100 Enemies while using the Dragon's Grasp.
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| Delusions of Grandeur ( 25 points ) | Finish a Deathmatch game with the highest score ( with at least 3 other players involved).
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| Draconist ( 15 points ) | Kill 400 Enemies while using the Dragon's Grasp.
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| Dreamkiller ( 20 points ) | Defeat a Dreamkiller without taking any damage.
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| Focused Mind ( 10 points ) | Defeat a Doorkeeper without taking any damage.
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| Free Association ( 15 points ) | Kill 3 or more opponents at the same time in a Multiplayer game.
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| Freezer ( 15 points ) | Kill 400 Enemies while using the Hailstorm.
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| Gunner ( 5 points ) | Kill 100 Enemies while using the Minigun.
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| Heavy Operator ( 15 points ) | Kill 400 Enemies while using the Minigun.
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| Heliophobia ( 25 points ) | Complete one level in Story mode while only using the Sunbeam.
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| Hoplophobia ( 25 points ) | Complete one level in Story mode while only using the Minigun.
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| Immortal ( 75 points ) | Complete every level on any difficulty without dying.
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| Instinctual Action ( 25 points ) | Enter Berserker Rage during a Multiplayer game.
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| Latent Abilities ( 25 points ) | Complete every level on any difficulty without dying in the Subconscious.
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| Lighter ( 5 points ) | Kill 100 Enemies while using the Sunbeam.
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| Ligyrophobia ( 25 points ) | Complete one level in Story mode while only using the Dream Cleaner.
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| Lucid Guardian ( 45 points ) | Complete Story mode on the Insanity difficulty.
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| Manic Episode ( 15 points ) | Enter Berserker Rage at least once in each level of the game in Story mode.
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| Master ( 20 points ) | Complete Chapter 4 on any difficulty.
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| Mastermind ( 25 points ) | Conquer 50 brains in Conquest mode.
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| Mind Guard ( 25 points ) | Return your team's flag at least 5 times in one CTF match.
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| OCD ( 10 points ) | Use every weapon at least once in any level of the game in Story mode.
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| Operative ( 20 points ) | Complete Chapter 2 on any difficulty.
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| Opiophobia ( 25 points ) | Complete one level without receiving any Health pickups.
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| Pagophobia ( 25 points ) | Complete one level in Story mode while only using the Hailstorm.
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| Paladin ( 15 points ) | Kill 400 Enemies while using the Sunbeam.
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| Poor Sleeper ( 15 points ) | Complete Story mode on the Bad Dream difficulty.
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| Practitioner ( 20 points ) | Complete Chapter 1 on any difficulty.
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| Prescription ( 30 points ) | Kill 100 opponents in any Multiplayer game mode.
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| Psycho Logical ( 25 points ) | Complete a Single Player game in Time Trial mode.
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| Psychoanalysis ( 15 points ) | Kill 25 opponents in any Multiplayer game mode.
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| Rhabdophobia ( 25 points ) | Complete one level in Story mode while only using the Dragon's Grasp.
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| Shocker ( 5 points ) | Kill 100 Enemies while using Shock Therapy.
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| Simple Jack ( 25 points ) | Complete a Single Player game in Single Weapon mode.
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| Somnambulist ( 25 points ) | Complete Story mode on the Nightmare difficulty.
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| Specialist ( 20 points ) | Complete Chapter 3 on any difficulty.
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| Stormer ( 15 points ) | Kill 400 Enemies while using Shock Therapy.
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| Technician ( 15 points ) | Kill 400 Enemies while using the Dream Cleaner.
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| Treatment ( 50 points ) | Kill 300 opponents in any Multiplayer game mode.
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| Untouchable ( 30 points ) | Kill 10 opponents in a row without dying in a Multiplayer game.
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| Wisdom ( 15 points ) | Find and enter in all of the Secret areas in any one level of the game.
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| Xenophobia ( 15 points ) | Kill 10 or more enemies at the same time with any weapon.
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