Korosader

Strike Back Win a match of Strike.

Undying, Eh? Defeat the Undying King

Balance Point In the campaign, eliminate five enemies at once using the Barrage.

Assassin's Greed You completed all 9 assassin missions.

The Ties That Bind Defeat Krauser, your former partner, in battle.

Only Way Out Reach the "In Water" ending.

Tip of the Hat Stealth take-down 10 armored enemies with melee by first removing their helmets without being detected

Quick Strike Be the first one to defeat an enemy in a multiplayer match.

Project: Resurrection Complete the mission "Project: Resurrection".

We're Going Home Defeat Saddler in battle, and escape from the nightmare.

World Traveler Collect one glowing piece from each of the 4 toy sets.

Inner Darkness Defeat Ophion

Last Drive Finish Act 2

Wishbone Rip off a dangling limb using Kinesis.

Best Friends In multiplayer mode, earn 10 Ace level goals.
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Mighty Mitten Kill 10 enemies in a row using only Gauntlet after obtaining the Revolver

Make it Raaaaaid Vanquish the Ancient Dragons of Destruction.

The Sampler Defeat 5 enemies, each one taking damage from a handgun, long-gun, and melee

Set A Benchmark Complete the game on Medium difficulty or above.

Welcome to the TOC Singleplayer: Complete Breaking Bagram

Kill of the week Drop a pallet of Artillery Shells on a Zombie

Obsessed Collect 10 pictures of Moxxi in Campaign of Carnage.

Ricky Recruit Complete 21 daily challenges in Headquarters.

Research Master Completed all research on every subject in Rapture.

Pearls in the Mud Open 5 GRE chests in Quarantine Zones

Waste Management Purchase the old dock and collect all nuclear waste.

Big Air Clock up 1 hour total time falling

Teacher's Pet Complete six classes.

We could be heroes Collect enough lums to unlock 10 Heroes paintings in the Heroes Gallery

Hard Work is Happy Work Successfully complete 50 Room Rushes

Hasta la Vista™ Kill a frozen opponent with a crossbow bolt.

Ashes of the Empire Complete the mission "Ashes of the Empire".

Together is Better Play and complete an Online match with one or more Clubmates

Make them count DLC Vietnam: Kill a total of 25 enemies with airstrikes (Host only).

Expert Creator Complete all levels in the Tutorials

Shot Through the Heart Return the Swamp Guardian's heart to the Undying King

TLAD: One Percenter Help Billy get his bike back. (The Lost and Damned)

New Profile Who This? Change your Player Banner, Avatar Border, and Player Title

Unnatural Disaster Defeat The Disaster

Calico Visit Calico for the first time

Make an Entrance Defeat enemies with the vehicle, long-gun, melee, and grenade, in that order, in 20 seconds

Multi-Disciplined Attain a gold medal in all applicable hobbies and pastimes.

A taste for blood Complete the game

That's something, I suppose Everybody survived!

Spark of Hope Activate the Supercharged Mode for the first time

Teensies' hero Rescue 300 Teensies

Inferno Complete the mission "Inferno".

Gadabout Discover all named locations in Oasis and the surrounding Pirate's Booty areas.

Equipment Collector Acquire 5 armor sets

Wolf of the Woods Defeat the Pan Wolf