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Knoxx-Trap Killed General Knoxx-trap

Steele-Trap Killed Commandant Steele-trap

Ned-Trap Killed Dr. Ned-trap

Light my fire Set 10 zombies on fire simultaneously.

Out of Sight, Out of Mind Store an item in the item box as Grace.

World Traveler Discover all named locations.

Keep foyer combat master Achieve gold medal for this challenge map

Ripples on the surface Step into the well.

Master of Infusion Perform all forms of infusion.

Muerte la robo-lución Killed the Interplanetary Ninja Assassin Claptrap

An uninvited guest Find the Crab Island.

Crackshot In Campaign, kill 5 enemies from over 100m away.

A World Without Christmas Complete the holiday text adventure.

Multi-Master Achieve all the level goals for 10 different levels.
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Not Worth My Time Get an instant victory on an enemy.

Oh, no you don't Kill a Ram using tackle skill.

Hole in Your Pocket Spent at least $500,000

What's In The Box?! Escape the Keeper beneath the catacombs.

Potato Masher Save 5 allies by throwing away a live enemy grenade.

Once More With Feeling Completed the mission "Return of Captain Chef".

Enemy Attrition In Multiplayer, get 10 kills in a round

Don't Look Back Use the Thermal, Burnout, or Nitrous Rocket Boost for a total of 10 minutes

Mmm, So Tasty! Cook your first well-done steak.

Uprising Superstar - Unlock 'Uprising'

Drop It Like It's Hot Kill 3 living enemies with one drop of a match.

The Voice in My Head Receive a telepathic message from King Kai.

Grim Reaper In Multiplayer, kill 30 enemies

Demolition Derby Get a destruction callout for breaking 50 objects.

Belly of the Beast Complete Provocation on Hardened, Veteran, or Realistic.

There and back again Explore the entire island.

Finally on the Offensive Complete Story Mission: Tangled Up In Blue.

Pony Up Spend $5000 across all shops.

Nether Say Die Completed Chapter 1 of Episode 2

Science! Unlock a crafting recipe using analysis.

Fatal Dose Defeat a zombie using the hemolytic injector.

People's Haven Complete the Eventide Sanctuary.

Do Shoot the Messenger Delivered Zarpedon's message.

Lending a Hand Complete all optional Honor story missions.

Following in His Footsteps Completed "Following in His Footsteps"

Wanted: Alive or Alive Deliver a bail bond target alive.

The Power of Blood Craft an item using the blood collector.

Like Mother, Like Daughter Unlock a drawer with a lockpick.

Flambé Made 10 enemies kill themselves with their own Molotovs

Stunner Stun 30 of Vex's minions.
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Cartographer Discover all areas of the map.

Back Off! Stun an enemy chasing you in the Overworld.

Recruited to 5th SFG Performed 5 headshots in 5 seconds

Chop Chop Defeat three zombies with a hatchet finishing attack.

Do-Gooder Complete 10 sub stories.

Speedreader Completed the game having found all 24 journal entries, with no Modifiers enabled, in less than 10 minutes. (From New Game in a single session only)