Nelsonils

Hungry Reach the pump room of the Waystation without alerting any Feeders.

Dark as the Void Solve the optimal roasting temperature of Dark Triangle Coffee

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

You Are Coffee Complete Episode 2: North Star

Legend Defeat a Legendary Dragon

Ride the Vortex Travel to a new reality using a Lumivista TV

Retro Survive the arcade game reality

Ghosts of the Past Face all of Carver’s demons by completing all Co-Op only optional missions.

Multiversal Agent Complete Episode 3: Time Breaker

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

This Page Here Read the screenplay in the Green Room

Fault in the System Use the Power Core to restore backup power

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)

Fragmerchant - Kill 5 Helghast using a single grenade Kill 5 Helghast at once using a single frag grenade

Platinum Congratulations!

Trial and Error Find the Black Rock Launcher

Hot Biscuits! Defeat 3 Haters at once with any kind of explosive

Smooth Blend In two tries or less, enter the warehouse office without being caught by the Coffee Mascots

Looking for Release Complete The Lake House

Medic!  Revive your Co-Op partner 10 times.

The Explorer Complete all optional missions.

Percolate Solve all Stashes
0/6

Weedkiller Kill 5 Cysts in the Biology Building with a single poison gas cloud.

Murderer and Victim Speak with Dylan

Bomb Squad Defuse all bombs in 3 minutes or less

Hard Work Solve the passwords for all locked computers
0/5

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

Whirls of Color Stun a Painted enemy with a Flashbang

Booty Master Collect all the prize bubbles on the story levels

Play Complete all story levels without dying, with the exception of those levels that only end when you die

Floor by Floor Read the FBC Files and Documents
0/37

Shape of a Man Discover the fate of Rudolf Lane

Aliens Collect all Alien Artifacts.

Pull the Painting Out Defeat a Painted enemy before it leaves the wall

Less Carrot, More Stick Defeat one of each enemy in the Lake House with the Black Rock Launcher
0/4

Unseen Assassin Assassinate a Target without getting spotted.

And Then We Doubled It! Dismember 1000 limbs from living enemies.

Messiah Reached Level 30 with Good Karma

Stick Around - Nail 20 Helghast to the wall Nail 20 Helghast to a wall using the Boltgun VC-21

The Librarian Collect all Logs.

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

The Result of Previous Training Complete Freeform Training in the Prologue.

The Professor Collect all Artifacts.

The Armorer Collect all Circuits.

Gun Collector Collect all Weapon Parts.

Cleared for Field Duty Complete The Final Test in the Prologue.

Devil Reached Level 30 with Bad Karma

True Mortal Reached Level 30 with Neutral Karma

Seizing the Opportunity Complete any Mission Story in The Final Test.

Silent Assassin Complete The Final Test unspotted. Kill only Jasper Knight, ensuring his body is not found.