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Wendell's Story DLC Vietnam: Complete the game (Host only).

Unforeseen Consequence You convinced Zeke Sanders to let his hostage go.

Leave no one behind DLC Vietnam: Free the 3 US prisoners of war (Host only).

Internal Dispute Make a zombie attack another zombie in the hospital wards.

Night Terrors Complete "Lost in Nightmares" on Professional.

Cat Got Your Tongue? Cut the tongue off a Licker β2 using the hatchet.

Silent Death DLC Vietnam: Perform 25 stealth kills while you have the 4 survival instinct tokens.

Master Craftsman Craft every possible item with Leon.

Death on stage Defeat Doris

Solid metal gear Upgrade a weapon to level 5

Transhumanist Fully upgrade your first augmentation of choice.

Prepare to die Take care of Aloysius's fate

Up the Ante! Upgrade your first weapon of choice.

Bury the hatchet Defeat McCullum

The Dying Swansea Take care of Swansea's fate

The Long Halloween Wayne vs Crane in New Story +.

Make them count DLC Vietnam: Kill a total of 25 enemies with airstrikes (Host only).

Unnatural Disaster Defeat The Disaster

A taste for blood Complete the game

Witness Witness the beginning of the Raccoon City outbreak.

Brutality 101 Perform 15 different combat moves in one FreeFlow.

The Ol' Fashioned Way Use an ink ribbon to save at a typewriter.

Case Closed Read all the files in the main story.

Lesser Evil Deal with Mr. Carella's indiscretion.

The Desk Job You convinced Wayne Haas to let you into the morgue.

You Little Rascal! Destroy every Mr. Raccoon memoriam.

Dirty Secrets Finish Chapter Three

Model Mania View all models.

Credit Where Credit Is Due Earn 200,000 credits.

Curator View all concept art.

Anarchy in the UK Turn a district to hostile status

Under The Red Hood Shut down this operation.

The Bull You defeated Lawrence Barrett, elite member of a secret mercenary hit squad.

Bronze Revenge Obtain 24 medals on the original Arkham City ranked maps (as Batman)

Child of the Shadows Finish a single chapter without alerting anyone

Motherly Ties Put a grieving mother's doubts to rest.

Bloodlust Collect 5000 microsamples of infected blood with the blood collector.

Two-Faced Uncover Lyegrove's secret

DLC: Mars: Slimy Death Hit 10 Arachnids with Crabmones.

I AM the Batman! Reclaim your city.

Unlife is strange Save this poor plant with water

Never Touch the Stuff Complete the main story without using herbs or med injectors.

DLC: Mars: Nick's Story Complete the game (Host Only).

Resolute Agent Complete the main story on at least Standard (Classic) difficulty.

DLC: Zombies: FertiliZer Kill 10 Gougers or Hot Heads with the tractor in Fields of Terror.

DLC: Mars:Bug Squasher Perform 10 takedowns on Arachnids using the Power Glove.

Minimalist Complete the main story without Grace using the blood collector.

DLC: Mars: The Queen is Dead! Kill all the Queens (Host Only).

DLC: Mars: Mars Second Amendment Buy 12 weapons.

Speed Demon Complete the main story by releasing Elpis within four hours.