Seeds of Doubt

In Zetsubou No Shima, the one must be saved.

The Ultimate Sacrifice

In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

The Grand Tour

In Revelations, visit every unique location within 2 minutes.

For The Good Of All

In Revelations, the Key must be opened.

A Better Tomorrow

In Revelations, complete the cycle.

Pack-A-Punch-ectomy

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

Controlled Chaos

In Revelations, override all of the Corruption Engines before round 6.

Love And War

In Gorod Krovi, the one must be freed.

Fire Mission

In Gorod Krovi, kill 8 zombies with a single Dragon Strike.

Wield a Fist of Iron

In Gorod Krovi, wield the Gauntlet of Siegfried.

Cryogenic Slumber Party

In Moon, complete Richtofen's Grand Scheme.

Acted Alone

In Verrückt, headshot 20 zombies in the courtyard from the second floor of the Asylum.

It's a Trap!

In Shi No Numa, kill at least one zombie with three different traps in a single round.

I said we’re CLOSED!

In Nacht Der Untoten, do not let any zombies enter the building during the first 3 rounds.

Little Lost Girl

In Origins, release Samantha.

Overachiever

In Origins, complete all 4 Challenges in one game.

Blown Away

In Gorod Krovi, kill 10 zombies at once with the Guard of Fafnir.

Chimp on the Barbie

In Ascension, kill a space monkey with a fire trap.

The Eagle has Landers

In Ascension, escape on all three lunar landers.

My Brother’s Keeper

In Der Eisendrache, the one must be erased.

Not Big Enough

In Der Eisendrache, trap and kill a Panzersoldat using the Ragnarok DG-4.

Not One Inch

In Gorod Krovi, complete a Lockdown Event.

Taking Flight

In Gorod Krovi, ride a Dragon.

Time to Slam

In Der Eisendrache, revive two players protected by the Ragnarok DG-4.

Der Meisterbogenschuetze

In Der Eisendrache, obtain all of the ancient bows.

That’s a lot of Jigawatts!

In Der Eisendrache, electrocute 121 zombies.

Death From Above

In Der Eisendrache, kill a zombie while being flung by a Wundersphere.

Fling Me to the Moon

In Der Eisendrache, use every Wundersphere twice.

Take a Bow

In Der Eisendrache, upgrade the Wrath of the Ancients.

Quick Off Your Feet

In Der Eisendrache, wallbuy the BRM.

In Their Sleep

In Campaign, kill 5 stunned enemies in under 3 seconds.

Tactical Specialist

Get 5 Medals based on a Specialist Ability in a single game.

Deadly Specialist

Get a Specialist-based medal that requires 3 or more rapid kills while using any Specialist Weapon.

Another Side of the Story

Complete the Campaign on any difficulty.

Full Circle

Complete Campaign on Hardened, Veteran, or Realistic.

200 Stories of Sheer Adventure!

Complete Lotus Towers on Hardened, Veteran, or Realistic.

Fly, Swim, Shoot

Complete Sand Castle on Hardened, Veteran, or Realistic.

Crackshot

In Campaign, kill 5 enemies from over 100m away.

Unlocked Potential

Fully upgrade a Cybernetics Core.

Understanding Madness

Complete Demon Within on Hardened, Veteran, or Realistic.

Friends and Foes

Complete Rise and Fall on Hardened, Veteran, or Realistic.

Blood for Blood

Complete Vengeance on Hardened, Veteran, or Realistic.

Into the Abyss

Complete Hypocenter on Hardened, Veteran, or Realistic.

Lock, Stock, And Then Some

In Campaign, unlock all attachments for any weapon.

Belly of the Beast

Complete Provocation on Hardened, Veteran, or Realistic.

Hold Still!

Kill 6 enemies affected by one Blinding Swarm or Firefly Swarm.

Not out of Gobblegum!

In Shadows of Evil, purchase and chew every type of GobbleGum in your Pack.

The Spider and the Fly

In Shadows of Evil, kill 10 zombies ensnared by a Widow’s Wine grenade

Margwa Party

In Shadows of Evil, kill 2 Margwas in a single round.

Battle Tested

Reach Commander (Level 55) in Multiplayer while playing online.

The Beginning of the End

In Shadows of Evil, complete all Rituals.

From the Shadows

In Shadows of Evil, spot the Shadowman fives times in one game.

Silverback In Black

Hack the Data Vault and brace yourself for Cyber's Avengening in Dead Ops Arcade 2.

Doing Camo Right

In Campaign, unlock all camos for any weapon.

Sting like a Talon

In Campaign, kill 20 enemies while flying the same Talon.

Foe To Friend

Use an enemy combat robot to kill 10 enemies.

Welcome to the Club

Reach Sergeant (Level 10) in Multiplayer while playing online.

Disavowed

Complete Black Ops on Hardened, Veteran, or Realistic.

Decimator

In Campaign, kill 10 enemies in under 3 seconds.

Can't Hide

In Campaign, kill an enemy through a wall or obstruction.