eXcisio

Aerial Superiority - Kill 5 Helghast while in the air Killed 5 Helghast while airborne using the Jetpack

Double Trouble - Reach the river in Co-op Made it to the Corinth River in Co-op mode

Pinpoint - Kill the Heavy with an StA-14 Killed the Heavy using the StA-14 rifle

Lost Property No crimefighter should be without this

Nobody that matters Who is the Joker?

Superstar Earned a 5-star rating in the battle to determine the world's fate.

Natural Selector Passed Titan's trials.

Mopping Up - Kill 40 Helghast foot soldiers Killed 40 or more Helghast foot soldiers on the beach

Floraphobe Toppled a green terror and cut an oversized succulent down to size.

Stranded Together - Reach the Extraction Point in Co-op Made it to the Extraction Point in Co-op mode

Dorgann's Trophy Completed all high-level Cie'th Stone missions.

No Witnesses - Destroy all dropships on the Highway Destroyed all dropships on the Highway

Breaking and Entering Find a way into the secret base

Fragmartyr - Kill 2 Helghast whilst taking your own life Kill 2 Helghast at once and take your own life using a single frag grenade

Melonpopper - 15 headshots using the sniper rifle Get 15 headshots using the VC32 Sniper Rifle

Minigunned - Destroy all targets Destroyed everything while using the Minigun on the Intruder

The Gully Completed the larger challenge in The Gully coliseum

Bobble-trap Collected 15 Claptrap bobbleheads

The Lubricator Found 25 oil cans

What a party! Collected 3 panties, 5 fish in a bag, and 15 pizzas

Now It's Personal - Kill 1000 Helghast Killed 1000 Helghast

Master's Seal Fully developed all characters.

Shattered - Destroy all glass in the Labs Destroyed all glass panes in the Stahl Arms South laboratories

Everyone wears masks Find the Black Mask

How's It Hanging? Clean up the Dry Docks

Run and Gunner - Kill 3 Helghast with one burst of assault rifle fire Kill 3 Helghast using an M82 or StA52 assault rifle without releasing the trigger

No Trespassing Get 10 Claymore kills in Quick Match/Ranked Multiplayer.
8/10

Completionist Completed all missions in Secret Armory

Hell-Burbia Completed the larger challenge in the Hell-Burbia coliseum

The Last Laugh The joke's on who?

Shut Down Shut down an entire Tower Network

Silent Knight Complete a predator encounter using only silent takedowns in the Main Story

Silver Revenge Obtain 48 medals on the original Arkham City ranked maps (as Batman)

Spread The Love - Kill 5 Helghast at once using the WASP's secondary fire Killed 5 Helghast at once using the secondary fire mode of the WASP launcher

The Angelic Ruins Completed the larger challenge in The Angelic Ruins coliseum

Exorcist Triumphed over undying lowerworld souls in seven fierce battles.

One Rule Save a life

One down, several to go Complete a Most Wanted entry

Galuf's Grail Completed all Cie'th Stone missions.

Room Cleared Get 10 Frag Grenade kills in Quick Match/Ranked Multiplayer.
5/10

Big Tournament Completed each of the larger challenges in all 3 coliseums

Blade Runner - 75 kills with the knife Kill 75 Helghast using the knife

Babysitter - Revive 25 Buddies Revive your buddies a total of 25 times

Anyone see that? Complete a predator encounter without ever being spotted in the Main Story

Adamant Will Felled a heavyweight of the lowerworld wilds.

Perhaps sooner, Perhaps later Defeat the Joker

Fight To The Last - Kill 1500 Helghast Killed 1500 Helghast

Completist - Destroy everything on the MAWLR Destroyed every destructible weapon on the MAWLR while on foot and on the Intruder

Battering Ram Shield Bash 5 different thugs

L'Cie Paragon Earned a 5-star rating for all Cie'th Stone missions.