Houndead

Treasure Hunter Held every weapon and accessory.

Tell no one Meet the requirements of a Secret Event.

Up to the Challenge 1 Complete 10 challenges.

Ultimate Hero Acquired all trophies.

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

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

Knack Master Completed all chapters on Very Hard difficulty

EXTRA: Brave Story Find the Brave Story at minute 18 in Space 54.

Auld Lang Syne Destroy two enemy robots who have been distracted by a cigarette.

Fisher is the Other Sam Proceed on the monorail in Act 3-4 without being spotted by the enemy troops or searchlights.

For the Night is Dark Endurance Co-op Challenge: Clear 3 Enemy Camps at night in a single expedition

Laboratory Complete Complete the laboratory.

Walking Death Beat the game on Hard Difficulty

I Felt Your Presence Witness the cult's meeting

Night Sword Find a Night Sword.

Why Aren't You Laughing? Joker must defeat Batman with the final hit coming from Not So Funny Is It?

Los Santos Legend Congratulations! You're Vinewood's biggest star!

Eat DiRT Earn 50 'CHECKMATE!' Medals

Invincible Warrior Kill 50 enemies in a row with inventory weapons without losing health.

When Therapy Makes It Worse Break through the barriers of self-deceit

In the Name of Science GTA Online: You completed The Humane Labs Raid and Series A Funding as Heist Leader or Crew.

Proto Tyrant Down Fight off the Proto Tyrant.

Factory Complete Complete the factory.

Speed Bumps Run over 500 characters in a single tank.

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

Eddie Is Back Complete Eddie's Challenge

Hang 'em High! Kill 30 enemies while they're suspended in the air with the grappling hook.

Duke Angry, Duke Smash! Kill 15 aliens with melee attacks while on steroids

Veteran Main character learned a specialization

Chaotic Whispers Acquire 10 Caches of Chaos from the Tree of Whispers.
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Instigator Start a Spectated Arena Fight in a Settlement

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

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)

Complete a 750yd drift inside the Inspiral Car Park Awarded when you complete a continuous 750yd drift inside the Inspiral car Park

I've Brought You A Gift Defeat the Soul Arbiter

Special Class-A Complete game on Hard difficulty

Pied Piper Entice 10 Stormtroopers to leap to their deaths with Mind Trick.

The Past as a Present Get what you want

Alley-oop! Shoot down a Hunter or an Eliminator while they are jump attacking in the air.

Fragmerchant - Kill 5 Helghast using a single grenade Kill 5 Helghast at once using a single frag grenade

I just love them! Win all the creatures

Gladiator school Survive 15 consecutive waves with each of the 4 characters.

Lovers Quarrel Green Arrow must defeat Black Canary with the final hit coming from Target Practice

Firebug Defeated the LU-74 "Firebug"

Hippy-Stomper Foot stomp 12 aliens

Proto Tyrant Down Again Defeat the Proto Tyrant.

EXTRA: Space Dude Survive 20 minutes in Space 54.

Frenzy Enter hell

Hackett's Quarry Massacre Killed everyone

Back to Normal Break the Pact with the Dark Man