Omnibass

Right Back At Ya Kill or incapacitate an enemy who threw a grenade at you.

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

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

Burial at Sea Completed Burial at Sea - Episode 1.

Digitize Me! Digitized into Claptrap's Brain.

YOLO Among Thieves Beat the Last Chapter Without Dying on Normal Difficulty or Harder

The Collector Completed a crazy request for Tannis

Backtracking Ride the crates

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

Guided by Sparks The crate is key

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).

Explosive Complete the mission "Long Way To The Top".

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

Hydrogen Bonded Achieve 100% synchronization in Dead Kings.

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

Skilled Slayer Landed Killsight strikes on 20 enemies.

It's Stuck Prepare a dry landing

Girl's Gotta Eat Feed thy noble queen thrice during a single visit to her quarters.

Tourist Found all 6 Claptrap statues

A Simple Skirmish Defeated 100 enemies.

Keep Rollin', Rollin', Rollin' Demonstrate your skill, or lack thereof, at rolling the magical treasure orb of many sides.

Ding! Overleveled to 11 Reached Level 61

Stanislavski's Method Use a dialogue option related to V's life path 10 times.

Roaming Terror Won an encounter in the overworld.

Put the fear into them Cause a panicked enemy to kill another enemy.

“The ‘I’ in Team” - Rescuer Rescued the Little Sister in “The ‘I’ in Team”

Under Ground Vertical passageway

Climbing the Cog Don't pull the lever just because you can

It's Like That One Video Show thine worst enemy, the abomination known as "The Darkness", who is the nerdiest of them all.

Up and coming terror of Whitechapel Unlock 50% of the skills.

Taming the White Tiger Took down 100 imperial soldiers.

The Wheel of Fortune Interrogate Anders Hellman.

New Recruit Cleared 3 missions.

Teacher's Pet Sat in on one of Moglin's lectures.

A well-kept secret Jack is dead and his identity will be hidden forever.

Going Up Don't let gravity keep you down

Cook and Serve Made 5 enemies explode with the Radar Range in Burial at Sea - Episode 1.

Full Body Conversion Install at least one implant in each system and body part.

Face Off Complete the mission "The Fall of Nakayama".

Brutal Perform 30 complete Brutal Takedowns.

Vincible Killed Crawmerax the Invincible

Gun Fu Kill or incapacitate 3 enemies in quick succession with a revolver or pistol in close combat.

Hans Off the Merchandise Collect all the items on The Descent

The Hermit Find Alt Cunningham.

Up and Running Repaired the machine in Suchong's lab in Burial at Sea - Episode 2.

Can't calm the crowd Kill an enemy as they are calming their panicked allies.

Smash and Not Grab Destroyed the Tassiter Proxy.

Snowball Effect Froze 2 enemies with the same Old Man Winter trap in Burial at Sea - Episode 1.

Fully Equipped Purchased any two upgrades for Old Man Winter or Radar Range in Burial at Sea - Episode 1.