Hooko

Fault in the System Use the Power Core to restore backup power

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

Not of This World Completed "Not of This World"

High Flier Gain your first PERFECT medal

Wulfrun's Bane Defeat the Sorceror Wulfrun.

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

Arkham City Lockdown Defeat every Villain With Batman

I feel lucky Purified the sword of the unlucky grave robber

Friend to the Ring-bearer Speak with Frodo in Rivendell.

Too Big to Fail Complete A Gilded Cage.

Civil Disobedience Ignore the elevator start order in Act 4-1. Instead, hold position and destroy all reinforcements.

Road Rage Kill 30 enemies by mowing them down with vehicles.

We Will Survive Win 15 matches in Team Survivors.

Communication Issues Campaign: destroy 15 satellite uplinks

Mission Impossible Complete the game on Zealot setting

Demolish Part 2 Campaign: demolish 50 houses

Challenge Accepted Complete all challenges in a single mission.

Outsmarted In singleplayer, get a quadruple kill with a single Frag Grenade

Campaign Gold Obtain all 108 medals on the original Arkham City campaigns (as Batman)

Sentimental Value You kept Megan's bracelet for yourself. Apparently, letting go really is the hardest part.

Channel Changer Take control of the enemy held radio and capture it with just seconds remaining

Danger Close Killed 30 enemies using Proximity Mines

Well Prepared Select a Starting Location and use an Agency Pickup to smuggle an item into Paris.

Spotter Killed 30 Enemies Using Sniper Support

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

Conservation Extract all wild animal species.

Trick Arrow Skills Shoot a Lizard with a Special Arrow

“Worlds of Hurt” – Expert Rescued the Little Sister in “Worlds of Hurt” in under 15:00, on Medium or higher difficulty

Trap Game Strong Successfully triggered 10 Vehicle Traps

Captain of the Guard Defeated Nephro.

Kick It Kill Hitler during the Aerostat Audition

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

Faster Than Light Achieve a 10x point multiplayer in "Jimmy's Vendetta".

Wrecking Machine Destroy 40 vehicles in the single player Campaign.

TLAD: The Lost Boy Become leader of The Lost. (The Lost and Damned)

No Show You died to helicopter blades on your first day on the job.

Good Soul Against all odds, you saved Faridah Malik's life.

Dockyard Discord Finish the Connection level in "Joe's Adventures."

Crude but Effective Deploy a bomb in the promethium well to destroy the Tyranid swarm

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)

Up to the Challenge 1 Complete 10 challenges.

The Ice Witch Freeze 20 enemies while wearing Odette.

Trial and Error Find the Black Rock Launcher

Hey, it's-a-me! Execute a stomp move on an enemy

Ghosts of the Past Face all of Carver’s demons by completing all Co-Op only optional missions.

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

Guardian Do not allow any friendly armor to be destroyed during Act 3-5.

Tower of Doom Tumble a pile of 6 Scraps

Hot Biscuits! Defeat 3 Haters at once with any kind of explosive

The Local Flavor Completed "The Local Flavor"