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It's Just a Bad Dream! Complete "Lost in Nightmares" with an S rank.

Depot Demolition Destroyed Lance Depot

End of your rope Cut a grappling hook rope with enemy on it.

Knoxx-Trap Killed General Knoxx-trap

Ned-Trap Killed Dr. Ned-trap

Steele-Trap Killed Commandant Steele-trap

Muerte la robo-lución Killed the Interplanetary Ninja Assassin Claptrap

Kung Fu Fighting Inflict a set amount of damage to Wesker in "Lost in Nightmares."

Sleeping Beauty Kill the sleeping guy in face down rappel section

The Great Escape Complete "Desperate Escape" with an S rank.

Way of the Warrior Defeat 150 enemies singlehandedly in one playthrough of "Desperate Escape."

Fly-by-wire Take out helicopters with remote missile 3/3.

Let's Get This Party Started! Unlock all selectable characters in Versus.

Waste not Every shot with the remote sniper hits a person or vehicle.

Wish Upon a Star Destroy all 18 of the Score stars found throughout "Lost in Nightmares."

Flawless Freeflow Fighter 2.0 Complete one combat challenge without taking damage (any character)

It's so realistic! Collected 5 3D glasses

Brainteaser Rescue the fifth hostage from Riddler

Tickets please Shoot the grapple guys off the side of the train.

Jack-pot Destroy 21 slot machines.

The Collector Completed a crazy request for Tannis

Burn Baby Burn Destroy 80 Fuel containers.

It Came from Below! Kill 6 enemies with the knife while underwater in "Legends Never Die".

Sucker born every minute Paid for a worthless tour of the world's largest bullet

Genius Rescue all the hostages from Riddler

Tourist Found all 6 Claptrap statues

Jungle Ghosts Finish the mission without breaking stealth.

Ding! Overleveled to 11 Reached Level 61

Small Tournament Completed the lesser challenge in all 3 coliseums

Piece of cake Storm the common room and kill everyone without taking damage on veteran.

Vincible Killed Crawmerax the Invincible

Storyteller Have 12 murderous dates with Calendar Man

Audiophile Collect all 18 Rorke files.

Night Terrors Complete "Lost in Nightmares" on Professional.

You've earned it Earn the mask. Finish the campaign on Veteran.

Sneaky Little Buggers Killed each of the loot midgets

You're Fired Cause an opponent to spin-out using a Red Burst.

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

There Is No "I" In Team... Perform Team Item Transfer, Skimboost, Team Slingshot and Team Ultimate in a single Race.

Lost Property No crimefighter should be without this

Shoot the Messenger Defeat 3 Agitator Majini in one playthrough of "Desperate Escape."

There's no "I" in Team Score at least 80,000 points in Team Survivors.

They look like ants Destroy all enemy ground targets and kill no allies with the rods.

It's All About the Points Score at least 40,000 points in Survivors.

Safeguard Complete round 20 in safeguard.

Breaking and Entering Find a way into the secret base

Keep the Good Times Rolling Chain a 20-defeated combo in Slayers.

The Gully Completed the larger challenge in The Gully coliseum

Bobble-trap Collected 15 Claptrap bobbleheads

The Lubricator Found 25 oil cans