Gberdex

Halfpenny Millionaire Awarded for collecting a total of 500,000 gold coins.

Behold the Betrayal More eyes do not see more than the mortal trifles.

Terminal Headache Perform 50 headshots with a ranged weapon.

Do No Evil Defeat the One Who Waits.

Well Balanced Breakfast Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.

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

Piece of Cake Complete the SP campaign on Easy Difficulty

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

Arkham City Lockdown Defeat every Villain With Batman

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

Beating the One-Eyed Worm Defeat the Leech

Break of Dawn Discover the true nature of the Aurora device

Mr Gold Collect 4,000,000,000 LEGO studs

Instigator Start a Spectated Arena Fight in a Settlement

Night Sword Find a Night Sword.

Chaotic Whispers Acquire 10 Caches of Chaos from the Tree of Whispers.
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Impossible Mission Succeeded at 3 dialog conversation checks with a single disguise.

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)

I just love them! Win all the creatures

Frequent Flyer Awarded for discovering 40 different Zoom locations.

Hippy-Stomper Foot stomp 12 aliens

The Cockerel Crowed Long and short, far and near, each span has its year.

Mean Streets Eliminated the threat from the shadows.

One True King Awarded for achieving 100% completion.

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

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

Into the Abyss Withstand and overcome the Chaos invasion

EXTRA: Space Dude Survive 20 minutes in Space 54.

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

You're THE Driver, baby Win all trophies..

Flaming Fury The golden child brought fire and smoke; when they cleared, the family broke.

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

Scratch me! Win and scratch all the lucky tickets

Eregion Reforged Build all the Forge Towers in Udun.

I'll Be Watching You Defeat the Lord of Change and face a figure from the past

Wanderer Discovered half of the secrets in Torch City.

The best laid plans... Win both Contraption Challenges

A Breath of Freedom Acquired a tool to overcome biological limits.

Home Sweet Home Complete "Home Sweet Home"

Platinum Congratulations!

Well begun… Complete the Unleashed Goal of an Event in Career mode.
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Stage 15 Perfect Get a Perfect Bonus on the Stage 15 Challenging Stage!

No One Left Behind Endurance Co-op Challenge: Revive a player 3 times in a single expedition

Gold Standard Get five gold medals in Challenge Mode

Power Play Complete "Power Play"

Unsafe to Possession Found the unstable source of power.

Bad Moon Rising Craft an Item at the Blood Moon Altar

Minion Maximiser Awarded for expanding your monster medal holder to maximum capacity.

Treasure Trove "All the four vessels now belong to me!"

Bronze Addict Win all the Bronze Cups from the paintings