Quantum Theory

Pierce the Skin
Uncommon

Pierce the Skin

5 Secret

Clear The Root of the Tower.

Xylem
Rare

Xylem

5 Secret

Clear Lumenosynthetic Reactor 2.

Enlightenment
Rare

Enlightenment

15 Secret
Dermal Lesion
Rare

Dermal Lesion

15 Secret

Clear The Root of the Tower on Hard.

Phloem
Ultra Rare

Phloem

15 Secret

Clear Lumenosynthetic Reactor 2 on Hard.

Breech
Ultra Rare

Breech

15 Secret
Subdural Hematoma
Ultra Rare

Subdural Hematoma

15 Secret

Clear Cavitas Cranii on Hard.

Death & Rebirth
Ultra Rare

Death & Rebirth

30 Secret

Clear the entire game on Hard.

Headache
Rare

Kill 200 enemies with headshots.

Major League
Ultra Rare
Cut a Rug
Ultra Rare

Land 100 full combo attacks. (3 consecutive hits)

Steady, Steady...
Rare

Steady, Steady...

20 Secret

Shoot an enemy with a Plasma Lancer from 50m.

Getting Intimate
Ultra Rare

Getting Intimate

20 Secret

Kill 100 enemies with melee attacks using the Bloodcleaver.

Five Birds, One Stone
Ultra Rare

Hit 5 enemies with one shot from the Ifrit.

Killing Connoisseur
Ultra Rare

Kill 10 enemies with every firearm Syd can equip. (Melee kills don't count.)

Leave Me Alone!
Ultra Rare
Professional Exterminator
Ultra Rare

Kill the Gargantua on Hard in 2 minutes 30 seconds or less.

Gladiator
Ultra Rare

Gladiator

20 Secret

Kill the Chariot during Thorax on Hard in 1 minute 30 seconds or less.

Warrior
Ultra Rare

Warrior

20 Secret

Defeat Thanatos on Hard in 1 minute 30 seconds or less.

Matador
Ultra Rare

Matador

20 Secret

Kill the Dreadnought on Hard in 2 minutes or less.

Nevermore
Ultra Rare

Nevermore

20 Secret

Kill the Raven on Hard in 2 minutes or less.

Entropy
Ultra Rare

Entropy

20 Secret

Defeat Chaos (Thanatos II) on Hard in 1 minute 30 seconds or less.

Release
Ultra Rare

Release

20 Secret

Defeat Diablosis Soma (Thanatos III) on Hard in 3 minutes 30 seconds or less.

Trusty Sidearm
Ultra Rare

Trusty Sidearm

30 Secret

Clear the entire story using only the Revenant.

What a Pal
Ultra Rare

What a Pal

20 Secret

Don't let any teammates who were setting charges go down during the final battle in The Womb.

8 Seconds with Style
Ultra Rare

Kill all enemies in Trachea without dying.

Fight Fire with Fire
Ultra Rare

Shoot down 10 projectiles from the Raven.

Novice
Rare
Soldier
Rare
Mercenary
Rare

Obtain the rank of Mercenary.

Commando
Rare
Elite
Rare
Slayer
Rare
Berserker
Rare

Obtain the rank of Berserker.

Storm
Rare
Immortal
Rare
Lone Gunman
Rare

Kill all members of the opposing team alone. (8-player Team Battle)

All Mine
Rare

Kill all other players in an 8-player Deathmatch.

On a Roll
Rare

Kill 10 opponents in a row during one match.

Killing Spree
Rare
Triage
Rare

Triage

20

Revive 10 teammates in one match.

50
1,000
238
248
28
Platforms
Xbox 360