screamingghost

All Weapon Upgrades Found every Power to the People weapon upgrade in the game.

From Rags to Riches Obtain over 10,000 Munny.

Mechanical Menace Complete "Mechanical Menace"

Xezat's Chalice Completed all mid-level Cie'th Stone missions.

Sneaky Little Buggers Killed each of the loot midgets

Back Home You grabbed a live grenade and threw it back, killing an attacker

Completed Grounded Mode Completed Grounded Mode

Poetic Justice You neutralized all key targets using indirect means

Art Dealer You collected all the Sokolov paintings

Research Master Completed all research on every subject in Rapture.

Gysahl Wreath Discovered buried treasure with a little help from a chocobo.

Epidemiologist Cold Darkness Challenge: Complete Cold Darkness

Mostly Flesh and Steel You finished the game without purchasing any supernatural powers or enhancements, besides Blink

Hornets' Nest You killed 4 enemies in less than 1 second using the crossbow

Making Some Noise Gained five noisemakers through lockpicking.

The Path of Knowledge Complete "The Path of Knowledge"

Surgical You played from the first mission through Kaldwin's Bridge killing fewer than 10 characters

Beyond Death Complete "Beyond Death"

Tempest You killed 6 enemies in less than 1 second

Versatile You killed characters with each weapon and offensive gadget

Never tell me the odds! Successfully perform Cooling Flush 10 times (Multiplayer)

Rough Economy Kill 3 enemies with a single round.

TLAD: One Percenter Help Billy get his bike back. (The Lost and Damned)

Barrel of Death - Kill 3 Helghast using your environment Kill 3 Helghast at once using the surrounding environment

Completed Grounded Mode Plus Completed Grounded Mode Plus

Bronze Revenge Obtain 24 medals on the original Arkham City ranked maps (as Batman)

“A Shocking Turn of Events” - Rescuer Rescued the Little Sister in “A Shocking Turn of Events”

At the Summit of Apocrypha Complete "At the Summit of Apocrypha"

“The ‘I’ in Team” – Collector Found all collectable Roses in “The ‘I’ in Team”

YOLO Deceptively Beat the Last Chapter Without Dying on Normal Difficulty or Harder

Get Your Hands Dirty Complete 'Semper Fi' on Veteran difficulty. (Solo only)

Far From Home Complete the quest "Far From Home"

Once More, With Feeling Finish the main story in New Game+ mode

Never Saw It Coming While invisible, used Peeping Tom to knock out 15 enemies with a melee attack.

Solstheim Explorer Discover 30 locations on the island of Solstheim

Chain Reaction Damaged fifteen foes with an exploding enemy, using the Radar Range in Burial at Sea - Episode 1.

Robot Hunter Unlock 10 Robot Mods

Kindred Judgement Complete "Kindred Judgment"

Harm's Way You caused 5 unintentional suicides

Firestarter Complete a level using only the flamethrower. Melee, grenades & explosives are OK.

Headhunting Complete "Headhunting"

Clean Hands You completed the game without killing anyone

Lost Property No crimefighter should be without this

Destiny's Trialed Complete the Forge of Destiny Challenge Tomb

Shadow You completed all missions after the prologue without alerting anyone

Supreme Soloist Complete any solo challenge.

Dead Drop On three occasions, knocked out an enemy after silently dropping off a Freight Hook.

Liberation Day Free your first slave.

Restoring Order Complete "Restoring Order"

Confirmed Luddite Destroyed ten Turrets in Burial at Sea - Episode 1.