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Salute Me Achieve the rank of Lieutenant.

Snow Angel Execute the forest sniper in 'Frozen Tundra' with a takedown

Hitchhiker Defuse the bomb on the truck in 'Gora Dam' while it is in motion

In the Belly of the Beast In Zetsubou No Shima, survive getting consumed.

Pacesetter Completionist Gain all stars in 'Pacesetter'.

Sleuth Unlock all intel (videos and audio files)

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

Velocity Completionist Gain all stars in 'Velocity'.

Taking Flight In Gorod Krovi, ride a Dragon.

Evolution Completionist Gain all stars in 'Evolution'.

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

… and you shall find Find and unlock 110 Drop Zones in Alps

Hey, Catch! Throw and hit an enemy directly with a Flammable Cannister then blow them up with it

Bulldozed In Ground Control, crush 25 enemies while driving the tank

Der Meisterbogenschuetze In Der Eisendrache, obtain all of the ancient bows.

Shot Blocked Shoot the gun out of the air in 'Flashpoint' before a terrorist catches it

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

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

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

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

Torque Completionist Gain all stars in 'Torque'.

Helpful Stranger Revive a player from a different Squad in MWZ

I Call Shotgun! Drive a vehicle with a Sentry Gun on the back and have it kill 5 enemies

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

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

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

Chimp on the Barbie In Ascension, kill a space monkey with a fire trap.

Burgertown Escort Service Rescue 1 survivor in Infection.

Positive cash flow Complete a Financial objective in Career Mode

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

Come On And ... Slam 10 zombies at once in Outbreak.

So Euro Enable European competition in the first season of Career

Tag, You're it! Use the Spotter Scope to tag 60 enemies or items in Open Combat Missions

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

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

Mountain legend Complete 30 MOUNTAIN STORIES in Alps

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

Keeper's Best Friend Prevent a goal with a sliding goal line clearance

2-fer Using the EBR-14, kill 2 enemies with 1 bullet 5 times in 'Payload' without sounding the alarm

Elevator Out of Order Reach the roof in 'Highrise' under 45 seconds

You Won't Be Needing It Anyway Steal a Plane Weapon or Plane Mod from an enemy plane.

Gravestone Kill 100 Zombies with a vehicle in a single deployment in MWZ

Scattered and Tattered Receive the Scatter Gun Mod.

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

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

That Party was Ace Ace every Adventure level in The Journey Home.

Donut Mess with a Cop Unlock Officer Dick.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.

Going to the Vet Earn the "Veteran" Challenge Collection.
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High Score In Zombie Rush, obtain a Personal Score of 250,000