BigDaddySoldier

Tougher Than Nails Acquire all Sentinel Hammer upgrades (Ancient Gods 2)

Untouchable Use only one self revive care package in the "Special Delivery" Special Ops mission.

Egg-stra XP! Complete the Egg-Stra XP challenge and then destroy a hive in the Onslaught DLC package.

Twisted Pole Obtain the Twisted Pole artifact.

Level Up Level up any of your active skills to level 50 or higher.

Star struck Get 3 Stars on 10 different Echoes

Siege the Day Complete Immora (Ancient Gods 2)

Big Brawler Get 10 consecutive zombie melee kills before Insta-Kill expires. (Map Pack 2 only)

Victory is Mine! Won online 7 times!
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Full Marks Infiltration - Complete all the Challenges

Set for Life Acquire 20,000,000 Zeni throughout the course of playing.

Survival Skills Complete Dingy Jungle without using a healing potion or losing a life.

Knight Score 1 million points in 1 run

Guerrilla Tactics Execute at least 25 different Skillshots in one Echo round

Hypersonic Complete all Secret Encounters in a single save slot (Ancient Gods 1)

Fling Me to the Moon In Der Eisendrache, use every Wundersphere twice.

Horsepower Completionist Gain all stars in 'Horsepower'.

dr0n3d Complete the "Arctic Recon" Special Ops mission in under 3:30.

Scholar Finish Chapter III.

Silence is Golden You completed The Brigmore Witches without alerting anyone

High Roller Complete the "Iron Clad" Special Ops mission on Veteran difficulty.

Monster Farmer Kill at least 300 of the same type of monster.

Chemophobia Defeat the trademarked chemical.

A Nightmare On Kusi Street Purge the Infestation on the Mainland

Rest Your Weary Fists Kill the Dark Lord (Ancient Gods 2)

Perk-a-Holic Have all four perks simultaneously active in a game of Nazi Zombies. (Map Pack 2 only)

RPM Completionist Gain all stars in 'RPM'.

Chill Out Defeat 5 mobs with a single Ice Wand attack.

Elements Completionist Gain all stars in 'Elements'.

On the Clock Completed the training in Through the Eyes of Evil in under 18 seconds

Ultra, Man! If yer gonna fight, give it your all, pal. Performing 100 Ultra Combos oughta do it, eh?

Pandamonium Complete the Panda Plateau secret mission.

My Power Level is 530,000 World Match - Acquire 530,000 BP.

Long Board Ride the Hoverboard for a total of 10,000 meters (electro-mag cables don't count!)

Go for Gold! In Onslaught, acquire seven gold chalices

Pea Shooter Kill a Rhino with only a pistol in Nightfall in Regular or Hardcore difficulty.

40 Knives! Kill 40 zombies with the bowie knife. (Map Pack 3 only)

Factory Zero You survived Hei Zhen Zhu and RBS using no Praxis kits, weapons, grenades or mines. Whoa.

Perkaholics Anonymous! Survive until round 20 without buying a single Perk. (Map Pack 3 only)

Pack-A-Punch-ectomy In Revelations, recover the Pack-a-Punch machine from its abductor.

Critical Literature Collect all physical Codex pages in a single save slot (Ancient Gods 2)

Frequent Flyer! Use the teleporter 8 times. (Map Pack 3 only)

Syngenesophobia Defeat the brothers.

Turbocharged Completionist Gain all the stars in 'Turbocharged'.

World Peace... For Now Beat the game on all difficulties.

Of All My Fights You're My 2nd Strongest Foe Won endless battle 7 times!
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Guilty as Charged Complete a Murder Circus Finale with Chief Justice.

Atomic Obliteration - Complete all the Challenges

Katagelasticism Mock the traitor.

Lone Champion Complete Lone Fortress on Adventure or Apocalypse difficulty.