Rammstone

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

Companion Finish the game with the same partner for the majority of the journey and return to the beginning.

Treasure Hunter Collect 75% of the prize bubbles on the story levels

Top of the class Win a 4-player game

Expert Creator Complete all levels in the Tutorials

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

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

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

Melonpopper - 15 headshots using the sniper rifle Get 15 headshots using the VC32 Sniper Rifle

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

Run and Gunner - Kill 3 Helghast with one burst of assault rifle fire Kill 3 Helghast using an M82 or StA52 assault rifle without releasing the trigger

Any Means necessary Get 50 kills with the electric fence and fire traps in one game in Regular or Hardcore difficulty.

Bringing the Pain Defeat 50 players using physical attacks in Versus.

Twice Nightly Complete New Game Plus

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

It Takes Two to Tango Chain a 40-defeated combo in Team Slayers.

Run the Gauntlet Complete "Desperate Escape" on Professional.

Sprinter Reach the exfil chopper with 1:30 remaining on the clock in Regular or Hardcore difficulty.

Army of One Win 15 matches in Slayers.

Paint Splurge Fire 5,000 paintballs

A hard man to kill Survive an assassination attempt

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

Rexecutioner Destroy the Metal Gear REX boss

You only live twice Defeat the assassin

Agent under fire Escape in the bin lorry

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)

Eye of the Tiger Win 15 matches in Survivors.

All time high Infiltrate Nicholas Webb's penthouse

No time to die Escape by helicopter

The Team That Slays Together... Win 15 matches in Team Slayers.

Double or die Save Theresa Lorca

You know my name Defeat Damien Webb

Solo Leave MI6 as a rogue agent

The writing is on the wall Catch Isola

For king and country Defend MI6

Trash Picker Scavenge 40 items in a single game in Regular or Hardcore difficulty.

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

We Will Survive Win 15 matches in Team Survivors.

A change of pace Complete an Escalation in TacSim

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

Completionist Complete all Extinction challenges and escape in Regular or Hardcore difficulty.

Throttled Escape Escape using a relic in Regular or Hardcore difficulty.

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!

Positively shocking Make an enemy taser another enemy

Always have an exit plan Use a gadget to escape a confrontation

The readiness is all Beat tier 3 of an Escalation in TacSim

Teamplayer You killed 5 opposing team members.

Soft landing Tackle an enemy over a ledge