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Freeze Well! Kill 15 frozen aliens

Center of the Earth Complete Chapter 6 B-Side

The Flawed Couple Defeat General Horse.

Musician and Muse Fulfill the 'Musician and Muse' Prophecy

Teamwork Endurance Co-op Challenge: Warm up from freezing by standing next to a campfire lit by your partner

Master of I Earned all trophies.

Weapon of the Resistance Acquired a very flexible weapon.

Communication Skills Endurance Co-op Challenge: Kill 5 enemies that have been marked by your partner

International C License Complete the International C License.

Challenge Accepted Complete the first rank of all non-level-specific challenges with a single character.

True Friendship You pulled off 3 Tag Crashes.

Swish Successfully leapt through the two red basketball hoops within the playground in one session.

Total Protonic Reversal Knock yourself down with your own weapon.

Giant Crown Collector Obtain a gold crown for 10 or more monsters that appear from low or high rank.

Fruit Fighter Shoot a background UFO in Future Tense.

Heavyweight Earn a Bronze Medal in all Infierno challenges

Eregion Reforged Build all the Forge Towers in Udun.

Devout Follower Offer 100,000 gold to the goddess.

1UP! Get a 1UP

Iron Will You faced your own demons and gave no ground to them.

Specter Gauntlet Upgraded Fully upgraded the Specter Gauntlet.

Weed Whacker Vanquish 100 Peashooters, 100 Sunflowers, 100 Chompers and 100 Cacti

Perfect Knight - Day 2 Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddler's Revenge (as Batman)

Kick It Kill Hitler during the Aerostat Audition

Mr. Oddjob Complete 5 Job Board Quests in one play-through

No Gods, No Masters Completed No Gods, No Masters.

I'm number 1 Win 1 Tower Battle

Ye Who Enter Open the gates to Vaulthalla.

Bartender Mix a drink

For the greater good! Kill 5,000 enemies.

Dark Reflections Fulfill the 'Dark Reflections' Prophecy

Liquid Sun Cleared Act 1 (Middle East).

What Mad Universe Attain ‘Ambassador’ status in Alien Colonist Encounters

Aided the Quen Helped the Quen of Fleet's End recover priceless knowledge and rescue those held captive.

Crispy Exterminate 10 Ratoids by using Electric Bricks.

New Treads Took a pitstop during a race and changed your tires.

Make a Point Achieve the highest score in the Shooting Range

Alone Time Endurance Co-op Challenge: Spend at least one day more than 60 meters apart

Completionist Complete all 80 levels.

Chemist Exterminate 10 Ratoids by leading them into Acid Obstacles.

Gold Standard Get five gold medals in Challenge Mode

Superhuman! Perform every character's supermove

The Taming of the Moo Defeat General Bull.

Up, over, under, onwards String together the following: jump, coil (over obstacle), slide (under obstacle)

Patriot Play at least 50 missions.

Cradle Claim a Base or Buy a Freighter

"Teamwork" Endurance Co-op Challenge: Collect an Artifact while your partner is down

Mean Streets Eliminated the threat from the shadows.

Get Away from Her! Endurance Co-op Challenge: Kill an enemy melee attacking your partner

Sweet goodbye Triggered the flip-off move