Raptahz

Make Them Count Kill 100 enemies with headshots.
100/100

Installation 04 Complete Halo.

The Autumn Leaves Complete Pillar of Autumn.

Gathering Storm Investigate the jungle facility.

Gun Nut Complete a level with customized loadout.

Just Gettin' Started Complete 1 challenge in any level.

No Man Left Behind Rescue Woods.

Big Leagues Start the Campaign.

Candygram In Buried, make a candy delivery.

Paranormal Progress In Mob of the Dead, open a door without spending points.

Dance On My Grave In Green Run, acquire your Tombstone.

I Don't Think They Exist In TranZit, kill one of the denizens of the forest while it is latched onto you.

The Lights Of Their Eyes In Green Run, pacify at least 10 zombies with 1 EMP.

Insert Coin Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.

Eaten by a Grue Play Zork on the terminal.

A safer place Sabotage the Soviet space program.

Cold Warrior Complete "Operation 40," "Vorkuta," and "Executive Order" on Veteran difficulty.

Unconventional Warfare Use the explosive bolts to kill 30 enemies in the campaign.

VIP Receive orders from Lancer.

Give me liberty, or give me death Escape Vorkuta.

Vehicular Slaughter Destroy all enemies on vehicles during the prison break.

Slingshot Kid Destroy all slingshot targets in 3 attempts.

Sacrifice Ensure your squad escapes safely from Cuba.

Death to Dictators Take down Castro with a headshot.

Welcome to the Club Reach Sergeant (Level 10) in multiplayer Public Match.

Ready For Deployment Reach rank 10 in Combat Training.

Just ask me nicely Break free from the torture chair.

Essential Armor Acquire all Demonic Essence armor upgrades.

Essentially Unstoppable Acquire all Demonic Essence upgrades.

Essential Health Acquire all Demonic Essence Health upgrades.

Essential Ammo Acquire all Demonic Essence ammo upgrades.

Fully Loaded Complete the Mastery Challenge for a single weapon.

Game Complete Complete the campaign on any difficulty.

Melee Expert Acquire all melee weapon upgrades.

The Only Thing They Fear Defeat The Old One and Enhanced Ahzrak.

Argent Return Complete chapter: Resurrection

Too Angry to Die Complete chapter: Harbor of Souls

Jailbreak Complete chapter: Spire of Nerathul

Gimme That Acquire the Ballistic Force Crossbow.

Komodo Champion Down! Kill a Komodo demon.

Powerful Investment Acquire all upgrades for a single shield rune.

Ancestral Blessing Acquire your first Shield Rune.

Agaddon Champion Down! Kill an Agaddon Hunter

Shield Adept Acquire all shield upgrades under the base category.

Bringing the House Down Complete chapter: The Holy City of Aratum

Vagary Down! Kill the Vagary Champion.

Supersized Brawl Complete chapter: Barrier Core

Essential Upgrade Acquire your first Demonic Essence upgrade.

Upgraded Acquire your first weapon upgrade.

A Dark Beginning Complete chapter: Village of Khalim