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Taste Of The Witching Hour Complete all Chapters on any difficulty.

Put the fear into them Cause a panicked enemy to kill another enemy.

Clean Cut Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)

Half Million You have amassed a fortune of $500,000.

You Won! You have completed the story.

Up and coming terror of Whitechapel Unlock 50% of the skills.

You Shouldn't Be There. Complete the fourth mission

Cook and Serve Made 5 enemies explode with the Radar Range in Burial at Sea - Episode 1.

A well-kept secret Jack is dead and his identity will be hidden forever.

Brutal Perform 30 complete Brutal Takedowns.

Up and Running Repaired the machine in Suchong's lab in Burial at Sea - Episode 2.

Snowball Effect Froze 2 enemies with the same Old Man Winter trap in Burial at Sea - Episode 1.

Storyteller Have 12 murderous dates with Calendar Man

King of QUB3D You beat the high score in QUB3D.

Can't calm the crowd Kill an enemy as they are calming their panicked allies.

Twofer Knocked out two or more enemies using the same Gas Bolt.

Fully Equipped Purchased any two upgrades for Old Man Winter or Radar Range in Burial at Sea - Episode 1.

Mein Hair Delivered the hair sample in Burial at Sea - Episode 2.

Paid in Full Completed Burial at Sea - Episode 2.

Demonslayer - Kill Radec within 20 minutes Kill Radec at Visari Palace within 20 minutes

One Man Army You survived a 6 star wanted level for a full 5 minutes.

Lawnmower Man Kill 4 enemies with the same Ripper blade

Chapters 5-7 (Normal) Complete Chapters 5 through 7 on Normal difficulty.

Peek a Boo! Kill a Stalker with the Seeker Rifle while in Zoom Mode

Are you scared, yet? Scare 200 enemies.

Mechanical Menace Complete "Mechanical Menace"

Necro Flambé Kill 50 enemies using the Flamethrower

Pearls in the Mud Open 5 GRE chests in Quarantine Zones

Dragonslayer - Destroy the ATAC within 1 minute 30 seconds Destroy the Salamun Bridge ATAC in under 1 minute 30 seconds

How Do You Feel? Complete the fifth mission

Assassin's Greed You completed all 9 assassin missions.

Shock Therapy Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)

It's a Trap! Kill 20 enemies with Detonator Mines in a deployed state

Power Games Access 10 different rewire points

Commander Of Magic Purchase all techniques.

Making Some Noise Gained five noisemakers through lockpicking.

Ripperologist Achieve 100% synchronization in Jack the Ripper.

C-Section Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up

Expert Creator Complete all levels in the Tutorials

Think Fast Kill 30 Necromorphs with Kinesis objects

Order Fulfilled You completed all 10 Exotic Export orders.

TLAD: One Percenter Help Billy get his bike back. (The Lost and Damned)

Barrel of Death - Kill 3 Helghast using your environment Kill 3 Helghast at once using the surrounding environment

Skewered in Space Impale an enemy into a Decompression Window to cause it to blow out

Double, Double, Toil And Trouble Create 20 Concoctions.

My Boom Stick Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)

Chapters 8-11 (Normal) Complete Chapters 8 through 11 on Normal difficulty.

Retail Therapy You unlocked the special ability of buying guns from Little Jacob.

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

Wicked Weave Master Execute 20 Wicked Weave attacks while using Dodge Offset.