DavidaPixie

Gruesome Encore Allow The Mycologists to experiment on a creature that is already itself an experiment.

Monster Master Maximize the research level for almost all large monsters.

A guard is meant to be broken Used Crush Assault 10 times.

Viva, Viva Chanbara! Cleared the story difficultly "Violent"

Potentite Purist Collect every potentite.
The power is in your hands!

The third faction Rescue all the Buddies from their respective predicaments

Cosmonaut Found the Solar System

Quest Love Completed all quests in the game

Guac is Extra Find Dave the Burrito.

Appease the Volcano Gods An NPC is destined to die in a trial by fire.

Don't make me pull the trigger! Survive for 5 minutes in Demolition mode

Off My Planet Recover the Hyperwave Beacon.

Worth Every Penny Acquire 1000 credits in one month.

Spino Do-Gooder Unlocked all Spino facilities through side quests.

Mr. Death Get all Trophies.

Bookwyrm This is proof that you've become quite familiar with the Library. How to obtain this is kind of a secret, but if you take the time to do a bit of reading now and then, you should be pleasantly surprised.

Gathering the Magic Used every costume special in combat

Farewell to a Friend Put a friend out of their misery.

Man No More Build a suit of powered armor.

One-Man Army Owned many parts of the strongest class for each vehicle type.
16/53

Are We There Yet? Boarded the phantom oxcart.

I've already seen stamps [Network] Used a stamp in Online Lobby.

Chatterbox Sometimes, after you've found a discovery point or when you're at a save point, you have the opportunity to press L3 to initiate a conversation between your companions. This is proof that you've experienced many Things and had a lot of Opinions about them.

Unstoppable Impulses Went berserk 100 times

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

Victory over Chalcedony This nasty bundle of bowl-haircutted bad attitude has a Soma that lets him fly around in the air. He'd better give that piece of Kohaku's Spiria Core back, or he'll be sorry!

I'm just a passing avatar [Network] Used a motion in Online Lobby.

Legendary Hero Reach Reputation 5 with any Hero.

Ultimate Collector Find all treasure.

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

Distortion Over Flowers Used Distortion Skill.

Auto-fill please [Network] Used auto-fill message in Online Lobby.

Like Killing Ants Kill 5000 soldiers.

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

Harpy Joyride Summoned a harpy, grabbed hold, and took flight.

To the Victor Go the Spoils Reclaimed your items from the scavenger who stole them from you.

45 Card Pickup Collected all Creepy Treat Cards

Heads Up! Kill 25 Heroes by attacking them from above in PvP.

Vehicle Maniac Owned many types of vehicles.
7/13

Here to Help! Completed a certain number of side quests.

Combo Machine Perform 20 auto combos. (Arcade/online only)

36 Challenges This is proof that you've collected all 36 anomalous orbs. You've poked around in every nook and cranny, you've laughed, you've cried, you've questioned your assumptions... But you made it!

Love thy VS [VS] Won on normal difficulty.

Survival Challenge: Master Cleared Infinite Survival floor 31 without having taken any damage

Survival Challenge: Adept Cleared Infinite Survival Mission floor 23 without having taken any damage

Burning times Complete a level on Master difficulty without using bombs, overdrive or boost with a custom ship

Grounded Kill an airborne enemy with Brigitte's Whip Shot in Quick or Competitive Play.

Super Serious Superstar Defeated General Shiva.

Elimination Master Win 20 Elimination PvP matches.

Wander and the Forbidden Clear the game in hard difficulty