TurtlePM

Sphinx' Riddle Complete all 40 of the Catwoman Riddler grid items

Still Tastes Good Endurance Challenge: Eat the meat of 5 wolves that were killed with poison damage

Nature Retreat Endurance Challenge: Survive for 7 days

O Mother, Where Art Thou? Have 20 Branded Ghûls at one time.

Burning Shadow Shadow Brand 20 Uruks.

One Instinct: Survival Get the true ending in Daughters.

Nom Nom Nom! Eat a captain with a Wretched Graug.

The Most Dangerous Game Defeat all the Beastmaster Warchiefs.

Campaign Bronze Obtain 36 medals on the original Arkham City campaigns (as Batman)

Hot Flashes Catch a Ghûl Matron on fire during the Lord of the Hunt campaign.

Gold Revenge Obtain all 72 medals on the original Arkham City ranked maps (as Batman)

Great Outdoors Endurance Challenge: Survive for 10 days

A Feast for Two Endurance Co-op Challenge: Eat the meat of 3 bears with your partner

Vacation Endurance Challenge: Escape the forest after surviving for 7 days

Great Haul Endurance Challenge: Escape the forest after surviving 10 days, with at least 10 Relics

The Flames Make It Go Faster Activate the Blazing Steed.

Sisters of Athena Endurance Co-op Challenge: Kill a combined total of 25 enemies in a single Expedition

Sisters of Artemis Endurance Co-op Challenge: Kill a combined total of 10 dangerous animals in a single Expedition

Campaign Silver Obtain 72 medals on the original Arkham City campaigns (as Batman)

Dominion Wraith Flash Dominate 50 Uruks.

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

Twinsanity Defeat the Doctors N. Tropy

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

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)

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

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

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

Platinum Congratulations!

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

Eregion Reforged Build all the Forge Towers in Udun.

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

Fruit Fighter Shoot a background UFO in Future Tense.

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

Sudden But Inevitable Betrayed! By your worst enemy.

Skillful Raider Endurance Challenge: Open 5 Codices or Sarcophagi without getting caught in a trap

Duke or Dimwit? Defeated all waves in Duke and Dimwit Theater.

The Collector Have a dominated Caragath, Wretched Graug and Spitter Ghûl simultaneously.

Taffer's Delight Completed Burial at Sea - Episode 2 in 1998 mode.

Master and Apprentice Endurance Co-op Challenge: Escape the forest after surviving 10 days with at least 20 Artifacts

Rooftop Ruffian Defeated all waves in Raven's Dome.

Museum Curator In CitC, unlocked all Gallery items.

Missile Defense System In CitC, killed an enemy with splash damage by shooting a rocket out of the air.

Transcendence Complete all 3 Raid chapters.

What Has Been, Will Be Again Defeat Dr. Neo Cortex… again.

Hand of the Prophet Defeated all waves in Emporia Arcade.

Adventure Besties Endurance Co-op Challenge: Escape the forest with 5 Medium and Large Artifacts

Card Shark Complete Survival mode in 21.

Betrayed The One Ring has returned to it's Maker.

Battle Forged Maximize the power of the Ring by completing all of the One Ring missions.

Sergeant-at-Arms In CitC, got a kill with each weapon and vigor (except Bucking Bronco).