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Pursuit of Knowledge Filled 80% of the Datalog.

Kuwabara, Kuwabara Heard a ghost on the radio.

Helo Hat Trick Destroy each objective helicopter in 'Reactor' with a different Armament

Snow Angel Execute the forest sniper in 'Frozen Tundra' with a takedown

Hitchhiker Defuse the bomb on the truck in 'Gora Dam' while it is in motion

Rapid Reflexes Get 5 Headshot Kills during a single use of the Adrenaline Stim in Campaign

Campaign Kitty Obtain all 108 medals on the original Arkham City campaigns (as Catwoman)

Taking Flight In Gorod Krovi, ride a Dragon.

Hey, Catch! Throw and hit an enemy directly with a Flammable Cannister then blow them up with it

Smart Mouth Complete a puzzle level with moves remaining

Der Meisterbogenschuetze In Der Eisendrache, obtain all of the ancient bows.

Bulldozed In Ground Control, crush 25 enemies while driving the tank

I Reach prestige Level I with any character.

Still counting Attain a Time Trial star rating of 50

Shot Blocked Shoot the gun out of the air in 'Flashpoint' before a terrorist catches it

Duct Tape FTW Create all combo weapons

Sorted In a public match, spend most of the trial injured (more than 50%) and live to tell the story.

High Score Score 800,000 points in one game -- with Game Settings set to Hardcore.

Gest - Chapter XIII Finish the levels from Chapter XIII in Warrior difficulty

Chapter 2 Speedrun Complete a Speedrun of Chapter 2 below the target time.

I Call Shotgun! Drive a vehicle with a Sentry Gun on the back and have it kill 5 enemies

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

Chapter 4 Speedrun Complete a Speedrun of Chapter 4 below the target time.

Helpful Stranger Revive a player from a different Squad in MWZ

Zombie Genocide Master Kill 72,000 zombies

Chapter 3 Speedrun Complete a Speedrun of Chapter 3 below the target time.

Chimp on the Barbie In Ascension, kill a space monkey with a fire trap.

FINE PLAY! (Opening Boss) Achieve all FINE PLAY! technical bonuses in the Opening Stage boss battle.

Tag, You're it! Use the Spotter Scope to tag 60 enemies or items in Open Combat Missions

Bloody Millionaire Accumulate a total of 1 million blood points. (blood points can be spent before reaching the total)
281634/1000000

2-fer Using the EBR-14, kill 2 enemies with 1 bullet 5 times in 'Payload' without sounding the alarm

Elevator Out of Order Reach the roof in 'Highrise' under 45 seconds

Chuck Greene: Cross-dresser? Change into all pieces of clothing in the game

The Spider's web Defeat 50 enemies using the Amazing Charge Attack

Tourist, Shivering Isles Entered the Shivering Isles

Master of the reliquary Gather all the fingers of Frankenstein

Gravestone Kill 100 Zombies with a vehicle in a single deployment in MWZ

Chapter 6 Speedrun Complete a Speedrun of Chapter 6 below the target time.

The Most Famous Hedgehog in the World Have your photos taken in Studiopolis Zone

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

Back in the Field Acquire the Major's keycard in 'Deep Cover' within 90 seconds without being detected

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

Skirmish - Chapter XIV Finish the levels from Chapter XIV in Squire difficulty

Head Trauma Use every type of melee weapon on a zombie

You Can Pet The Dog Pet a Hellhound in MWZ

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

The Ultimate Sacrifice In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

Chapter 8 Speedrun Complete a Speedrun of Chapter 8 below the target time.

II Reach prestige Level II with any character.
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Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)