SolidusSerp

A Time of Wood and Stone Gathered the lost lore of Cadash Thaig ("Witch Hunt" downloadable content)

Overwhelming Confidence Complete 25 successful Challenge runs.
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Time's Teller Defeat the Unknown.

Accessory All Areas Awarded for making every single available improvement to an accessory.

Oh Yeah!!! Complete Nothing is as it Seems

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.

YadaaaaaaAAAAABAAAAAAAAAA Pulled off a Dramatic Finish for the first time.

Real Estate Agent Have all possible town NPCs living in your world.

Prime Directive Shatter Skeletron Prime.

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

Blood and Iron Defeat Lesmes of the Confraternity of Incorruptible Flesh.

Back in the Field Acquire the Major's keycard in 'Deep Cover' within 90 seconds without being detected

Alright, Alright Survive until round 10 in Infection.

Wish Upon A Star Complete Sofia's story

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

The New Fort Knox Gain 1500 gold bullion

Survivor Survive until Round 25 in Outbreak.

Fighters Megamix Take out an opponent with each character's All-Star Move.

Magical Sound Shower Race to every piece of music.

Skirmish - Chapter XIV Finish the levels from Chapter XIV in Squire difficulty

Act 2 Cleaner Complete all Act 2 maps on Nightmare difficulty.

Child of Darkness and Flames Defeat Angra Mainyu without taking any damage while controlling Proto Bahamut in Chapter 8 of the main story

The Ultimate Sacrifice In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

You Can Pet The Dog Pet a Hellhound in MWZ

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

PC Load Letter Use the 3D printer 15 times in a single match in Outbreak.

To Jugger or to Jugger-Naut Kill all juggernauts after they land on Veteran difficulty in the "Vertigo" Special Ops mission.

Chapter 8 Speedrun Complete a Speedrun of Chapter 8 below the target time.

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

The Sharpest Tool in the Shed Defeat the Sentinel of the Emery.

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

Chapter 7 Speedrun Complete a Speedrun of Chapter 7 below the target time.

It's a Trap! Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)

Call me Terror-Billy! Beat the game on "Call me Terror-Billy!" difficulty or higher

Hat Trick! Scored three goals with the same player in a single match.

It's a Cover, Not a Hat Collect 20 hats on a single character.
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Swish! Pulled off a Stylish Evade.

Act 4 Cleaner Complete Act 4 on Nightmare difficulty

To Hell And Back Finish the game on Very Hard Mode with any character

It's Camouflage on Some Planet Collect 40 weapon colors on a single character.
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Push It to the Limit Raise a character to level 100

Every Rose Has Its Thorn Befriend Rose.

Chapter 9 Speedrun Complete a Speedrun of Chapter 9 below the target time.

Saviour of All Erdrea Awarded for defeating the Lord of Shadows and restoring the World Tree to its rightful place.

Challenger of the Rift Completed a floor of the rift labyrinth.

Fivepeat This is your real power, child? Show me it's not luck by winning 5 Ranked Matches in a row!

War Veteran Arcade: cleared any route with difficulty set on hard.

Golden Acts Earn your GOLD SEGA License.

High Wire Act Kill 10 enemies while using a zipline

Blood Donor Pass 5000 levels in Bloody Palace Mode