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

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

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

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

Run the Gauntlet Complete "Desperate Escape" on Professional.

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

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

Collector's Delight Collect all weapons, text logs and audio logs on Chapter 1: "Worlds Apart"

Twice The Firepower Play cooperatively with a second player

Army of One Win 15 matches in Slayers.

Rag Doll Apprentice Earn Bronze on all challenges

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

Eye of the Tiger Win 15 matches in Survivors.

Learning the Ropes Play all four Multiplayer Game Modes

We Will Survive Win 15 matches in Team Survivors.

Perfect Win Beat the game without continuing.

Specter Officer Reach max level with one class in the Cooperative campaign.

P-Sec Officer Complete the game on "Hard"

No Stone Unturned Collect all weapons, text logs and audio logs on Chapter 3: "Return to the Megavents"

Fishy Billiards Score a goal by shooting the fish into the basket with a Lightning Ball

Salute Me Achieve the rank of Lieutenant.

Room Clearer Damage three opponents with a single attack

Overtime Sheet Beat the top score on the "Extraction Site" Challenge

Treasure Hunter Collect all weapons, text logs and audio logs on Chapter 8: "In The Hearts of Men"

No Point in Dying Complete the game in one sitting with five or less deaths

No Cop Duty Beat the top score on the "Central Plaza" Challenge

Necro Slayer Complete the game on "Expert"

Isaac 2.0 Complete the game on "Impossible"

Engineer By Trade Beat the top score on the "Maintenance Bay" Challenge

Colony Full Of Crazy People Beat the top score on the "Medical Bay" Challenge

Laugh It Up Partner Beat the top score on the "Mess Hall" Challenge

Ready For Takeoff Beat the top score on the "Shuttle Bay 47" Challenge

Bridge Commander Beat the top score on the "Atrium" Challenge

Need A Towel Beat the top score on the "Water Tunnels" Challenge

Herbal Remedies Beat the top score on the "East Grow Chamber" Challenge

Get A Medic Beat the top score on the "Life Support Room" Challenge

Weapon Nut Max out all upgrades for every weapon on one profile

Mega Star Earn 50 stars on one profile

Bully Defeat an opponent who is Grabbed by your team-mate

Annoying Acrobat Swing from one place to another and damage an opponent in between

Man Up Sweetheart Unlock all trophies

Rag Doll Expert Earn Silver on all challenges

Let Me Down! Hit an airborne player with three consecutive Lightning Balls

Fly Swatter Destroy 3 Flypods within 5 seconds on any level of Insect Infestation.

Tank Oppressor Destroy 20 tanks in sequence.

Spidery Point Destroy the Spider Boss on Arachnophobia, without destroying any of its mini guns.

Tank Sympathizer Destroy both generators on Claustrophobia without killing a Tank.

Worm Tangle Destroy 3 Worms in sequence on The Ooze.

Offside! Throw the fish to a team-mate who then scores within one second

Wheel Collector Complete level Fizz Wheels without killing a Fizz Wheel, ( the rolling wheels connected by a laser ).