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Doctorate in Thermodynamics Kill 2 scientists with a single grenade in ‘Self Destructive’ Operation.

No Loose Ends Eliminate the leader of the Raven's Rock faction

Sleuth Unlock all intel (videos and audio files)

Test the Product Knife 10 stacks of cocaine in ‘Hostile Takeover’ Operation.

Deer in the Headlights Stab five stunned enemies in a row in the "Light 'Em Up" Special Ops mission.

Home Wrecker Use 50 pieces of interactable cover.

All Going To Plan! Master Zangief! I fought in 50 network battles! The ring came to life with the clash of burning spirits! (Excludes Battle Lounge)

Soul Survivor Reach round 15 in Nazi Zombies without getting revived. (Map Pack 2 only)

Rare and Exceptional Purchase Armor, a Charm, or Vanity Gear from Masujiro the Melodious in New Game+.

Speed Slayer Kill the Breeder in less than 5 minutes in Nightfall in Regular or Hardcore difficulty.

Just Another Day at the Office Complete the campaign for the first time

Gong like the Wind In IX, defeat all 8 challengers summoned by a gong within 5 minutes

West Side for Life In Blood of the Dead, reach Round 20 without leaving the West Side of the island

Throttled Survival Kill the Breeder while using a Relic in Nightfall in Regular or Hardcore difficulty.

Stowaway In Voyage of Despair, spend 5 consecutive rounds in the Cargo Hold

Survived Mayday Kill the Kraken for the first time in Mayday in Regular or Hardcore difficulty.

Act 1 Cleaner Complete all Act 1 maps on Nightmare difficulty.

The First Chaos Emerald Acquire a Chaos Emerald.

I Know a Shortcut In Voyage of Despair, take every fast travel path in a single game

Targets Acquired Get past the first gate in Awakening in Regular or Hardcore difficulty.

A Can Of Worms Play Trial of the Worm for the first time.

Sub Zero Complete the "Arctic Recon" Special Ops mission on Veteran difficulty.

Salute Me Achieve the rank of Lieutenant.

Acidic Alchemy In IX, Get a kill with the Acid Trap in each of its craftable locations

Undiscovered Truths Find all the intel hidden in Nightfall.

Postmaster Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.

The Sky Is Mauling! Kill 3 enemies with Mortar Strike in ‘Air Traffic Control’ Operation.

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

Making a Point Kill both bosses with head shots in ‘Hostile Takeover’ Operation.

Pack Addict! Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)

A Little Pack Here, a Little Punch There In Voyage of Despair, use the Pack-a-Punch at every possible location in a single game

Justice Is Blind Kill 4 enemies who are stunned by a Flashbang Grenade in any Operation.

Enthusiasms Kill Torres with a melee attack in ‘Hostile Takeover’ Operation.

High Score In Zombie Rush, obtain a Personal Score of 250,000

Discriminating Buyer Use exactly one of each care package in the "Special Delivery" Special Ops mission.

Act 2 Cleaner Complete all Act 2 maps on Nightmare difficulty.

The Sound of One Hand Capping Complete ‘Got Your Back’ Operation with only a handgun.

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

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

Act 4 Cleaner Complete Act 4 on Nightmare difficulty

Multiplicitous In Zombie Rush, get your score multiplier up to 100

Acquire Waffle Weapons! Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Extreme Manhunt Complete a Seasonal Manhunt mission on Challenge difficulty or above.

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.

Two's Company, Four's a Party Complete any Adventure level with 4 players.

Artful extraction Absorb your third Boss Stem Cell

Finished, without fear. Finish the game with two Boss Stem Cells active

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.