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It's so realistic! Collected 5 3D glasses

Arachnophobia Outrun a gigantic threat in the city.

May His Death Satisfy You Kill Malthael in Hardcore mode.

The hills of Gallipoli Unlock all Codex Entries in The Runner

All men dream Unlock all Codex Entries in Nothing is Written

Home Sweet Home Occupy The Relay Station (Valley Of The Yetis).

Urban Exploration Involves heavy lifting

Burn, Baby, Burn! Kill 5 enemies with a torch.

Slither into Oblivion Remove an invisible enemy from the equation.

Look Both Ways Kill all the KVA in the traffic section without damaging a civilian vehicle in "Traffic."

Night Survivor Defend The Relay Station And Survive The First Night (Valley Of The Yetis).

Party Crasher Kill 20 enemies with the Grappling Hook in "Sentinel."

Maximum Overdrive Kill 50 enemies while using Overdrive.

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

Welcome to Nam DLC Vietnam: Get back your gear at the helicopter crash site.

Fast Break Score at least 2 Dunks in the first minute of a Hoops game

Fracture Jaw Complete Fracture Jaw in Campaign on any difficulty.

Right 4 Life Complete act 1 with 4 different characters.

Cut Your Teeth You were successfully promoted up a rank in multiplayer.

Ruthless Make 50 total Shots on Goal using Merc, Grog, or Ripper

Hard Hitter Complete the campaign on Hardened difficulty.

One of the Many Defeat the ultimate evil within.

Builder Complete One Relay Station Upgrade Quest (Valley Of The Yetis, Single Player Only).

First Step into Darkness Complete the game on Casual difficulty.

Sound of thunder Unlock all Codex Entries in Through Mud and Blood

Flying Ace Shoot down 10 enemies with machine guns in "Throttle."

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

Above & Beyond (Hardcore) Reach level 70 in Hardcore mode.

Restricted Airspace EMP 10 enemy aircraft out of the sky with the hovertank in "Bio Lab."

Entry Level Electrician I should get this whole generator panel running just in case. (Ch. 14)

The Collector Completed a crazy request for Tannis

Understanding Madness Complete Demon Within on Hardened, Veteran, or Realistic.

Backtracking Ride the crates

Registered Voter Head to 'Arena Preferences' and use all of your votes

Spiritual Hunter Kill A Yeti (Valley Of The Yetis, Single Player Only).

Guided by Sparks The crate is key

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

Team Creator Build and save a level with more than one player with the thermometer more than 30% full

Survival of the Fittest Equip a Topper and win an Unfair Bot Match

Frozen in Time Kill 50 Necromorphs while they are in Stasis (single player only)

Boots on the Ground Go 2 minutes without double jumping or wall running in a mission where these abilities are available.

Master of the Awakened Kill 5 Yetis (Valley Of The Yetis, Single Player Only).

Fly, Swim, Shoot Complete Sand Castle on Hardened, Veteran, or Realistic.

SP Prestige Complete the campaign on Veteran difficulty.

Taking down giants Unlock all Codex Entries in Friends in High Places

Greed over Need Kill 100 Treasure Goblins.

Master Builder Complete All Relay Station Upgrade Quests (Valley Of The Yetis, Single Player Only).

All That Glitters Steal 5 collectibles

Awakened! Complete The Valley Of The Yetis Campaign (Valley Of The Yetis).

Improviser Use the environment against an enemy.