Halphasias

Never Saw It Coming While invisible, used Peeping Tom to knock out 15 enemies with a melee attack.

Chain Reaction Damaged fifteen foes with an exploding enemy, using the Radar Range in Burial at Sea - Episode 1.

Lost Property No crimefighter should be without this

Dead Drop On three occasions, knocked out an enemy after silently dropping off a Freight Hook.

Confirmed Luddite Destroyed ten Turrets in Burial at Sea - Episode 1.

Audio Enthusiast Collected all Audio Diaries in Burial at Sea - Episode 1.

Turbo Slapper Slap more than one player at once

Breaking and Entering Find a way into the secret base

Firepower Kill 5 guards at once with a blunderbuss.

His Word Was “Perhaps” Freedom Cry - Complete all missions

It's all gone changing on me Calmed Junior down

How's It Hanging? Clean up the Dry Docks

Bountiful Survive 3 days holding a bounty of $250 in all states.

Glutton for Punishment Used Ironsides to collect 20 rounds of ammo or more in Burial at Sea - Episode 2.

Twice Nightly Complete New Game Plus

Silver Revenge Obtain 48 medals on the original Arkham City ranked maps (as Batman)

The Last Laugh The joke's on who?

Not a sole survivor No-one survived!

Possible futures Found all of the white framed Pictures

His Own Medicine Disarm the Gouverneur and kill him with the branding iron.

Aye, aye captain Unlocked Fliss's Arrogant Trait

Right there with ya, boys Only the men survived!

His Full Attention Freedom Cry - Achieve 100% synchronization

The Whole Story Collected all Audio Diaries and Voxophones in Burial at Sea - Episode 2.

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

Teacher's Pet You watched all the tutorials! Take a gold star, go to the top of the class.

Go with your gut Chose all of the Heart decisions

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

Friendly Skies Defeated all waves in The OPS Zeal.

Battering Ram Shield Bash 5 different thugs

Girls' night out Only the women survived!

Frequent Flyer Zip Kick 5 different thugs

Consider all the permutations Chose all of the Head decisions

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

Perfect Freeflow 2.0 Perform a perfect combo including all of Batman's combat moves (any play mode)

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

Quite a lot of deaths that night Found all of the black framed Pictures

Secrets! Lies! Conspiracies, man! Found all Secrets!

It's Art Find a permanent home for the squirrel statue.

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

Ghost ships are just a myth, right? Found all Pictures

Grin and Bear it Survive 18 bear attacks and kill the bear each time in Story Mode.

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)

Platinum Congratulations!

10 Story Versus Wins Win 10 Story mode Versus games against at least one other player offline

Skin Deep Skin every species of animal in Story Mode.

Zoologist Study every animal across all states in Story Mode.

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

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

Best in the West Attain 100% completion.