Astrocitus

Quiet and Falling Collect the Crystal Heart in Chapter 5

A Meeting of the Minds Completed "A Meeting of the Minds"

No More Running Complete Chapter 7 B-Side

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

Monarch Abides Won the battle of Stellar Bay.

Big Cheese Perform 50% of the Single Player Skillshots

Scratch me! Win and scratch all the lucky tickets

Los Santos Legend Congratulations! You're Vinewood's biggest star!

Center of the Earth Complete Chapter 6 B-Side

Challenge Accepted Complete the first rank of all non-level-specific challenges with a single character.

Devout Follower Offer 100,000 gold to the goddess.

Freeze Well! Kill 15 frozen aliens

Fruit Fighter Shoot a background UFO in Future Tense.

Billy Batson, I chose you as champion Complete ''Sivana Escape''

Grilled Meat Prepare a big meal using an improvised electric stove

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

EXTRA: Chaos Rosalia Find the Chaos Rosalia in Astral Stair.

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

Become that which you fought against Complete ''Mask of the Phantasm'' after achieving True Villain status

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

Giant Crown Collector Obtain a gold crown for 10 or more monsters that appear from low or high rank.

Don't call them sidekicks Complete ''The Summit''

No Return Complete 'Ring of Steel' on Veteran difficulty. (Solo only)

Stop Hiding Survive An Ambush

1UP! Get a 1UP

Celestial Selfie Take a selfie with Eson the Searcher in ''No Eson of Mine''

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

EXTRA: Trisection Find the Trisection in Astral Stair.

Ye Who Enter Open the gates to Vaulthalla.

C12 Kill a C12 by doing a right rodeo, a left rodeo and by blowing off multiple limbs.

Blighted One Reach level 50

Armed and dangerous Grow as a person, experience betrayal. Again.

...Where Credit is Due Watch the credits from beginning to end.
"Hey...aren't they the guys who made Dead Head Fred?"

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)

EXTRA: Bat Robbert Evolve the Pako Battiliar.

EXTRA: Evolve the Phas3r. Evolve the Phas3r.

His name’s Captain Sparklefingers Complete ''Sivana Showdown''

Bronze Addict Win all the Bronze Cups from the paintings

Blind Luck Kill 25 enemies using blind fire.
"Sorry. Didn't see you standing there."

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

I Like to Keep My Options Open Unlock every Grappling Hook Mod

Single Perfect Without forming a Dual Fighter, get a Perfect Bonus on a certain Challenging Stage!

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

Gold Standard Get five gold medals in Challenge Mode

Plenty More to Go Completed your first main scenario quest

Show Me the Way Uncover every Ancient Statue

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

Stage 19 Perfect Get a Perfect Bonus on the Stage 19 Challenging Stage!

Home Sweet Home Complete "Home Sweet Home"

You consistently underestimate us Complete ''The Summit'' after achieving True Villain status