Game Achievements:

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