Perrsevering

Eggstra Nemesis! Complete the Egg-Stra XP challenge and then activate a generator in the Nemesis DLC package.

Hireling Commander Reach level 10 with all Mercenaries.
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Splicer God Complete the "Wrath of the Machine" raid on heroic difficulty.

TBoGT: Past the Velvet Rope Score 80% or above in all missions. (The Ballad of Gay Tony)

TBoGT: Gold Star Score 100% in all missions. (The Ballad of Gay Tony)

The Final Chapter Find all 7 story related intel files in Exodus.

You Wish Hit an Ancestor with a Hypno Knife in Regular or Hardcore difficulty.

Kurast Cleanser Complete 25 runs of the Kurast Undercity.
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The Grand Tour In Revelations, visit every unique location within 2 minutes.

Gone Spelunking Retrieve all 55 Audio Logs and 25 UrbEx Diaries the Underground.

The Beast Below Reach Underground Rank 40.

From Beyond Memorize Seven Sigils at Once

Wield a Fist of Iron In Gorod Krovi, wield the Gauntlet of Siegfried.

Memory Memorize a Sigil

One Man's Poison... Use the cure station to kill 5 host zombies at once in Infection.

The Shadow Out of Time Craft an Item Using Eldarium

20/20 Upgrade 2 weapons to level 20 in Outbreak.

Blown Away In Gorod Krovi, kill 10 zombies at once with the Guard of Fafnir.

The Temple Visit a Leyshrine

The Haunter of the Dark Reach the Tower

In the Vault Explore a Vault

The Silver Key Obtain ?????

The Other Gods Draw Forth the Most Powerful Surge

Beyond the Wall of Sleep Enter the Maelstrom

The Outsider Defeat a Surge Summons

Fire Mission In Gorod Krovi, kill 8 zombies with a single Dragon Strike.

Tools of the Trade Craft the Virus Filter and Flare Gun in Survival mode.

Timing is Everything Kill the final 3 Ancestors within 10 seconds of killing the first Ancestor in Regular or Hardcore difficulty.

Wardrobe Change In Revelations, wear three different hats.

The Gem in the Tower Explore the Isle of Siptah

Always Hard Kill the final Ancestor with a relic active in Hardcore difficulty.

Popcorn Cook 50 zombies with the Magnetron in Infection.

Indirect Fire Kill 100 zombies with traps in Infection.

Vaporeyezed In Gorod Krovi, use the Gigant Beam to kill 20 Zombies in one activation.

Tormented Massacre Defeat 1000 Elites on Torment IV.
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Cryogenic Slumber Party In Moon, complete Richtofen's Grand Scheme.

Bane of the Khazra Complete the Rise of the Khazra Dark Citadel.
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Born Survivor Successfully survive and escape in Survival Mode.

Game Over, Man! Call in a rescue in Outbreak.

Love Tap Kill a Goliath with a melee attack in Infection.

Climbing the Corporate Ladder Survive until round 25 in Infection.

Smooth Operator Defeat Oz in Descent.

Objectively Good Capture an objective, build both fortifications and unlock both perks

Wonderful In Revelations, kill 10 enemies in one shot with each wonder weapon.

Nah, I'm Good. Reach round 7 without anyone opening a door in Descent.

Subzero Hero Obtain clothing to get a survivable temperature rating of -22°C / -7°F.

Viktorious Revenge In Gorod Krovi, complete all solo Trials in one Zombies game.

Small Consolation In Shangri-La, use the 31-79 JGb215 on each type of zombie.

Phantom in the Hull Reach level 18 in survival mode.

Time Attack In Gorod Krovi, complete Time Attack: Round 20.