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The Most Dangerous Game Defeat all the Beastmaster Warchiefs.

Oh, the Horror Finish the game on Hard difficulty.

The Throwdown You convinced the smooth-talking politician Bill Taggart to tell the truth in public.

Dan says hi Find Dan's special note.

Amateur Bouncer Protected Sammy's from the Dixie Mafia

Blade of Death Killed 20 enemies using Throwing Knives

Buried Secrets The Resistance was born.

Cardboard Companions You found all of your cardboard buddies.

The Fourth Time Defeat Dr. Neo Cortex

The Caped Crusader Win with Batman using every special move and his Supermove

Rip And Tear As Colt, inflict a truckload of damage to Eternalists during a single use of Havoc.

Friendly Skies Defeated all waves in The OPS Zeal.

Can't Stop This Win an Invasion 1v1 fight

Succession Plans Break into Hell's Gate HQ and apprehend Two-Face.

Tower Master Complete 10 Living Towers

Infiltration Clear the "Classified Intel Acquisition" Side Op while riding in the back of a truck

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

Faction Champion Reach level 50 in any faction

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

Vacuum Cleaner Decompress 20 Necromorphs without getting sucked out yourself

Mass Production Produce 100 objects from your builders

Girls' night out Only the women survived!

Great Outdoors Endurance Challenge: Survive for 10 days

Best of the Bunch Earn the MVP award in any Online Tournament match

Battering Ram Shield Bash 5 different thugs

Synthesis Amateur Synthesize 15 types of items.

Consider all the permutations Chose all of the Head decisions

Liberty City (5) Your friends all like you above 90%.

The Cat Came Back Break into Riddler's secret hideout and exact your revenge.

Hell of a Sheriff Complete the No Way Out scenario. (No training mode)

A Kontender Complete 1 Tower Battle

All Snug in Their Beds Uncover the secret history of the park.

Frequent Flyer Zip Kick 5 different thugs

Dressed for Success Find all upgrades for Artyom's suit.

Spoiled for Choice Infuse one of each type of weapon.

Trying to Set Things Right Nuna and Fox continued after the Mouse.

Pedro, I'm Sorry... Defeat Mutant Pedro in Claire's Episode Two.

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

Crashlander You sent the Nazi zeppelin down in flames.

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

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

Untouchable Complete the game in Impossible Mode.

Armed and dangerous Grow as a person, experience betrayal. Again.

Grilled Meat Prepare a big meal using an improvised electric stove

A Hunter, Through and Through Find and kill all 4 rare spawns.
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Perfect Freeflow 2.0 Perform a perfect combo including all of Batman's combat moves (any play mode)

I Can Do Blunt Weapons Use Moira's crowbar to defeat 50 enemies in the main campaign.

It's not an 'S' Complete Man of Steel level

Bronze Age Warrior Collect 35 common bronze rewards

Arctic Grave Push the chief witness into the ice lake in "Joe's Adventures."