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Searcher Collect all Ansem Reports in Jiminy's Journal.

Explosive Finish Kill 12 enemies with explosive barrels while riding the server lift during Echoes of a Cold War.

Monarch Abides Won the battle of Stellar Bay.

A Crappy Way to Die Kill the enemy in the porta-potty.

Daredevil While affected by one Flashbang, kill two enemies in the Campaign or in Co-op.

The Right Choice Change the Color with Action Cards 40 times.

Collector Nerd Find 10 reward items

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)

Ambitious Adventurer Clear the game and watch the ending sequence.

FROSTY!!! Captain Cold must defeat Flash with the final hit coming from Cryogenic Blast

Completed Act 8 - Easy Complete Act 8 - Easiest Difficulty

Ye Who Enter Open the gates to Vaulthalla.

No More Strangers You've met all the random characters.

Shocking Discovery! Collect all the items (Batteries) on Lockdown

Completed Act 3 - Assassin Complete Act 3 - Assassin Difficulty

Headache relief Kill 25 Summoners

Novice Hero Win the Cerberus Cup.

Ascension Collect 2400 Essence and hear the Seer’s final words

Hippolyta's Blessing Wonder Woman must win the match with the final hit coming from a Meter Burn Lasso of Truth

Superhuman! Perform every character's supermove

Completed Act 4 - Assassin Complete Act 4 - Assassin Difficulty

Well Balanced Breakfast Simultaneously had bonuses for meat, carbohydrates, sugary drink, caffeine, and alcohol.

Gazebo Pay tribute to Jessamine one last time

Got your back Kill 50 enemies that are actively attacking other players

The Royal Protector Finish the game with Corvo Attano

Undertaker Unlock 50% of the Krypt

Quit Hitting Yourself Gorilla Grodd must defeat Flash with the final hit coming from Mind Control

Howlers ’til the End Side with the Howlers in the Dust District

Up, over, under, onwards String together the following: jump, coil (over obstacle), slide (under obstacle)

Impossible Mission Succeeded at 3 dialog conversation checks with a single disguise.

Completed Act 5 - Assassin Complete Act 5 - Assassin Difficulty

Power Out! Collect all the items (Batteries) on Power Core

Platinum Congratulations!

Ready to play with the big boys Complete Act 9 - Easiest Difficulty

Worldwide Scientist Complete all story locations as Bio-Specialist

Scorched Earth II Blow up all trucks and guard towers on the approach to the monastery in The Final Countdown.

Occult Carver Craft 10 Bonecharms

I Can Smell Colors In solo play, gather three different Xenoflowers without the bonus effect of any of them dissipating

End of the Line Defeat the Matriarch on any difficulty

Complete Blackout Campaign: destroy 22 satellite uplinks

Treadhead - Kill 30 Helghast whilst in the tank Take 30 Helghast lives whilst using the ISA tank

Lucky Guess Next time, Jacob better use a more complex code to arm his bombs.

Gunless Finish 'Alone' without firing a gun.

Nessie Reach the barge without being seen in 'Wetwork'.

Spooky Scary Skeletons Destroy 10 Glowing Skulls in Monster Ball

Fearless Fall Drop from Addermire’s highest point and take out an enemy below

The Best of Friends You pulled off 3 partner-specific Tag Throws.

Completed Act 6 - Assassin Complete Act 6 - Assassin Difficulty

Make A Wish Scarecrow must defeat any opponent with the final hit coming from Schizophrenia

Sliding Marksman Score a headshot while sliding