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Down in the Briney Took a Bathysphere ride in Burial at Sea - Episode 1.

Surgical Sniper Heal by getting 10 headshot kills while you have the Golden Harbinger equipped.

Sleeping Beauty Kill the sleeping guy in face down rappel section

The Great Escape Complete "Desperate Escape" with an S rank.

Bad Dog! Defeat Cerberos.

The Conqueror Win the conquest of Elysium with freed humans from the 3 main regions.

Dark Horse Acquire Eternal Maw for use outside the Afterlifes (The Curse of the Pharaohs)

Fly-by-wire Take out helicopters with remote missile 3/3.

Let's Get This Party Started! Unlock all selectable characters in Versus.

Sting in the Tale Complete the 5 Serqet locations (The Curse of the Pharaohs)

Into the Abyss Complete Hypocenter on Hardened, Veteran, or Realistic.

Waste not Every shot with the remote sniper hits a person or vehicle.

Gathering More Strength Collect all the Keeper's Insights in Episode 2.

A True Ruler Dethrone the king.

Wish Upon a Star Destroy all 18 of the Score stars found throughout "Lost in Nightmares."

The One Defeat all of the Fallen.

Going Places Rode the tram in Burial at Sea - Episode 1.

Guardian of the Underworld Close all Tartaros Rifts.

Gathering Full Strength Collect all the Keeper's Insights in Episode 3.

Isu Bloodline Completely fill the Knowledge Sequence.

Blood for Blood Complete Vengeance on Hardened, Veteran, or Realistic.

1 Versus 100 Defeat the Hekatonchires.

Doing Camo Right In Campaign, unlock all camos for any weapon.

Unlocked Potential Fully upgrade a Cybernetics Core.

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

Hephaistos's Apprentice Forge the 3 Legendary Weapons.

Burial at Sea Completed Burial at Sea - Episode 1.

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

Your Own Medicine Kill 10 Isu Soldiers with the Blessing of Kronos enhancement.

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

Jack-pot Destroy 21 slot machines.

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

Hard shell, soft core Defeat the Commander

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

Air Supremacy Killed 100 enemies with Wolf.

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

Burn Baby Burn Destroy 80 Fuel containers.

It Came from Below! Kill 6 enemies with the knife while underwater in "Legends Never Die".

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

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

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

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

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

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

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

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

200 Stories of Sheer Adventure! Complete Lotus Towers on Hardened, Veteran, or Realistic.

Break the Ice Shattered 5 enemies who had been frozen with Old Man Winter in Burial at Sea - Episode 1.

Dark Victory Escape the Nightmare.

Walking Encyclopedia Discover all of the collectibles in any Mission.