Quantum Theory Cheats, Codes, and Secrets for Xbox 360

Achievements

*There are 27 secret achievements. show

Achievement	Description	Value
8 Seconds with Style (secret)	Kill all enemies in Trachea without dying.	20
All Mine	Kill all other players in an 8-player Deathmatch.	20
Berserker	Obtain the rank of Berserker.	30
Breech (secret)	Clear The Womb on Hard.	15
Clear Your Mind (secret)	Clear Cavitas Cranii.	5
Commando	Obtain the rank of Commando.	20
Cut a Rug	Land 100 full combo attacks. (3 consecutive hits)	20
Death & Rebirth (secret)	Clear the entire game on Hard.	30
Dermal Lesion (secret)	Clear The Root of the Tower on Hard.	15
Elite	Obtain the rank of Elite.	20
Enlightenment (secret)	Clear The Seed of Gnosis.	15
Entropy (secret)	Defeat Chaos (Thanatos II) on Hard in 1 minute 30 seconds or less.	20
Fetus (secret)	Clear The Womb.	5
Fight Fire with Fire (secret)	Shoot down 10 projectiles from the Raven.	20
Five Birds, One Stone (secret)	Hit 5 enemies with one shot from the Ifrit.	20
Getting Intimate (secret)	Kill 100 enemies with melee attacks using the Bloodcleaver.	20
Gladiator (secret)	Kill the Chariot during Thorax on Hard in 1 minute 30 seconds or less.	20
Headache	Kill 200 enemies with headshots.	20
Hunter	Kill 500 enemies.	10
Immortal	Obtain the rank of Immortal.	50
Internal Trauma (secret)	Clear Trachea on Hard.	15
Killing Connoisseur (secret)	Kill 10 enemies with every firearm Syd can equip. (Melee kills don't count.)	30
Killing Spree	Kill 20 opponents in one match.	20
Leave Me Alone!	Destroy 50 Watchers. (50/50)	50
Lone Gunman	Kill all members of the opposing team alone. (8-player Team Battle)	20
Major League	Land 200 combo throws.	20
Matador (secret)	Kill the Dreadnought on Hard in 2 minutes or less.	20
Mercenary	Obtain the rank of Mercenary.	20
Nevermore (secret)	Kill the Raven on Hard in 2 minutes or less.	20
Ninja Style	Filena killed 50 enemies.	20
Novice	Obtain the rank of Novice.	5
On a Roll	Kill 10 opponents in a row during one match.	20
Phloem (secret)	Clear Lumenosynthetic Reactor 2 on Hard.	15
Pierce the Skin (secret)	Clear The Root of the Tower.	5
Predator	Kill 1000 enemies.	50
Privacy Issues	Destroy 1 Watcher. (1/50)	10
Professional Exterminator (secret)	Kill the Gargantua on Hard in 2 minutes 30 seconds or less.	20
Release (secret)	Defeat Diablosis Soma (Thanatos III) on Hard in 3 minutes 30 seconds or less.	20
Slayer	Obtain the rank of Slayer.	20
Soldier	Obtain the rank of Soldier.	10
Steady, Steady... (secret)	Shoot an enemy with a Plasma Lancer from 50m.	20
Stop Looking At Me!	Destroy 20 Watchers. (20/50)	30
Storm	Obtain the rank of Storm.	30
Subdural Hematoma (secret)	Clear Cavitas Cranii on Hard.	15
Through the Viscera (secret)	Clear Trachea.	5
Triage	Revive 10 teammates in one match.	20
Trusty Sidearm (secret)	Clear the entire story using only the Revenant.	30
Warrior (secret)	Defeat Thanatos on Hard in 1 minute 30 seconds or less.	20
What a Pal (secret)	Don't let any teammates who were setting charges go down during the final battle in The Womb.	20
Xylem (secret)	Clear Lumenosynthetic Reactor 2.	5