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Take a Deep Breath Reach the Centre of the Galaxy in Survival Mode

The Forever War Attain ‘Legend’ status in Ships Destroyed

Navigators Build an Exocraft

Pattern for Conquest Attain ‘Notorious’ status in Ships Destroyed

Reunion Visit another Player's Base

Cradle Claim a Base or Buy a Freighter

What Mad Universe Attain ‘Ambassador’ status in Alien Colonist Encounters

Who Goes There? Attain ‘Diplomat’ status in Alien Colonist Encounters

Citizen of the Galaxy Attain ‘Babelfish’ status in Words Collected

Use of Weapons Attain ‘Novice’ status in Ships Destroyed

The Languages of Pao Attain ‘Interpreter’ status in Words Collected

Have Spacesuit - Will Travel Attain ‘Adventurer’ status in On-foot Exploration

The Space Merchants Attain ‘Trader’ status in Most Units Accrued

The Diamond Age Attain ‘Magnate’ status in Most Units Accrued

The Last Laugh The joke's on who?

Bomb Squad Defuse all bombs in 3 minutes or less

Snap To It Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan

How's It Hanging? Clean up the Dry Docks

Party's Over Destroy all Harley Balloons

Breaking and Entering Find a way into the secret base

Lost Property No crimefighter should be without this

Battering Ram Shield Bash 5 different thugs

Frequent Flyer Zip Kick 5 different thugs

A Few New Tricks Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge

Platinum Congratulations!

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)

Twice Nightly Complete New Game Plus

Campaign Nightwing Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

Campaign Wonder Obtain 114 medals on the original Arkham City and Robin Bundle Pack campaigns (as Robin)

Robin Revenge Obtain 78 medals on the original Arkham City and Robin Bundle Pack ranked maps (as Robin)

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

Feline Revenge Obtain all 72 medals on the original Arkham City ranked maps (as Catwoman)

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

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

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

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

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

Mystery Stalker Reveal the mystery watcher

Gotham Base Jumper Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.

Genius Rescue all the hostages from Riddler

Aggravated Assault Stop all assaults in Arkham City

Serial Killer Track down the serial killer

Family Jewels Retrieve your stolen goods

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

Exit Stage Right All the world is a stage

Freefall Don't look down

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

Gadget Attack Use 5 different Quickfire gadgets in one fight (any play mode)

Fully Loaded Collect all of Batman's gadgets and upgrades