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The third faction Rescue all the Buddies from their respective predicaments

Not so pretty boy Beat Khan in his One-on-One

Last Blood At the end of Guns of Stygia, kill all the enemies on the walkways before the explosions do

You can't handle it Upgrade Dante's Devil Trigger to maximum

Chapter 6 Speedrun Complete a Speedrun of Chapter 6 below the target time.

Office's Affairs Cleared 3 sub-missions.

Head Trauma Use every type of melee weapon on a zombie

Fodra Queen in 60 Seconds Defeated the Fodra Queen in a minute or less.

This Is How Hot Dogs Are Made 10 Walkers Killed with Saw Blades in the Logging Camp

Highly Decorated Achieve all Daily Tidy badge ranks
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Two's Company, Four's a Party Complete any Adventure level with 4 players.

Fruits of Labor Go into Training mode 10 times.

Doctor Heal over 500,000 hit points.

The First One is the Hardest Get your first 1,000,000+ combo

State of the Badass Art Complete all Campaign levels on Ultimate Badass difficulty

Game Clear: Chaos Completed the game on the Chaos difficulty setting.

Determined Don't use any hints to finish the game.

Safety Warning Escape from a grinder hazard on the grind stage

Feel the Beat, Y'all! Complete "Feel the Beat, Y'all!" challenge

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

Avenged Confronted the culprit behind the Vael family's murder. ("The Exiled Prince" downloadable content)

Memento Gave Sebastian a family heirloom. ("The Exiled Prince" downloadable content)

Chapter 7 Speedrun Complete a Speedrun of Chapter 7 below the target time.

Robin Revenge Obtain 78 medals on the original Arkham City and Robin Bundle Pack ranked maps (as Robin)

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

The River Complete "The River" challenge

Chapter 8 Speedrun Complete a Speedrun of Chapter 8 below the target time.

Tarred and Feathered Save your friend from the birds

Medium Rare Kill Belyash

Up-Lifting On Monorail Factory, kill all enemies whilst riding the lift

Pied Piper of Squirreldom Have 5 squirrels following you around at the same time

The Road to Glory Win every battle on Victory Road.

Can you dig it? Complete "Can you dig it?" challenge

Supernova Get 3 stars on each of the first 14 Echoes

Loyal Customer Purchased all upgrades in the Motor Forge

Like a glove… Finish trial #6 with 3 hearts left without picking up a spell.

Mode master Win an online game of every mode in every difficulty at least once.

Nemesis Complete "Nemesis" challenge

Perk-olated Purchase a single Team Perk.

J-Adventure Maestro Clear all story arcs in J-Adventure mode.

Let the Dog Out Complete "Let the Dog Out" challenge

Thank the maker! Unlock your first secret from the Extras menu

Test Subjects Use sheep as test subjects in 6 levels

Terma-nated Defeated Solomus and the Terma Ten.

One with Oblivion Defeated Lambda Theos. Impressive!

House Drawings Collect all drawings in the house

Golden Idol Perform every Single Player Skillshot in the game

Monkey Obsessed! Collect every Monkey Toy in the game.

Nahantu Sightseer Explore all of Nahantu.
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Challenger of the Rift Completed a floor of the rift labyrinth.