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Weapon Proficiency Over the course of the game, you've scored 100 perfect attacks.

Live by the bike... Shoot the gas tank of a moving motorcycle.

Fully Loaded Rescued enough Claptraps to earn 42 inventory slots

Hard Boiled Help officers Kurtz and O'Neal solve a murder case.

Last Known Position Lose the enemy 10 times

Hearts and Minds Retrieve Manko's Necklace

World's Greatest Detective Spirit of Amadeus Arkham revealed

New Kid On The Block You have joined the KKK.

A Paneful Demise Defeat the Stained Glass Demon in the Hilltop Mausoleum.

Industrial Accident In the Main Campaign, killed 20 enemies with a Sky-Hook Execution.

New Squadron Record Complete the cargo ship mockup in less than 19 seconds.

Ghost Train Fight for survival

IQ Test Solve the first riddle

Bon Appétit! Fed a body to an alligator

With Great Power Comes Greater Power Unlock and purchase all powers.

We have Overtime! - Working Weekends? Enter Overtime!

High Flier Kill 5 duskbats without touching the ground
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Lore Hoarder Collect 65 % of all Galactic Compendium entries of each category.

The Second Horseman Complete 'Safehouse' on Veteran difficulty.

Dead-On Score 150 points at the shooting range.

Gimme That Back! Lose, then recover your weapon from an Imp.

No stone unturned Find a secret area in the Arcade.

Master Blaster Kill 2 multiplayer enemies with a single explosive.

Arkham City Sirens Drop in on an old friend

Down Boy! Kill a zip-lining enemy player in multiplayer.

Tonic Collector Collect or Invent 58 Tonics in the Physical, Engineering and Combat tracks

Rise and Fall After an uruk kills you to become a Captain, help him become a Warchief, then kill him.

Fashionista Equip a full matching Gear Set

Freefall Don't look down

Found Cohen's Room The player has entered Sander Cohen's personal quarters

Tips Appreciated Tip Moxxi.

Tough Nut Finish the story on hard difficulty level.

Lightning Rod Defeat Steropes the Lightning Bringer.

Wasteland of Opportunities Complete Act 02

Time Paradox Kill Makarov and complete your mission

Twenty Seconds to Comply Complete Street Vulture's Turf quest.

Monkey Around In multiplayer, escape death 3 times by using the rope ascender.

Exit Stage Right All the world is a stage

Diamond Hard You cleaned out Vangelico to pay back Martin Madrazo.

First Day in South Park You completed your first day in South Park.

Mastery You've unlocked all of the upgrades for a New Kid ability.

Up to the Challenge Beat the Challenge of Olympus

The Man in the High Tower Find and use the hidden cache in 'Heat'.

Stuck Up Rob five stores in under five minutes.

Burning Vengeance Perform an Execution on a flaming Berserker.

Fashion Passion Find and equip all Outfits.

That's a Knife! Fully upgrade the knife

Tag Teamed Hit 100 Enemies with the Oath Stone of Orkos

Dropping Loads Win a live grenade at a Slot Machine.

Heated Conflict Take out 10 soldiers with active Heat