Elepuss

I Know a Shortcut In Voyage of Despair, take every fast travel path in a single game

A Time of Wood and Stone Gathered the lost lore of Cadash Thaig ("Witch Hunt" downloadable content)

One and Done As Murray, defeat 5 guards with the Fists of Flame.

Blood Rights Kill Satan with Samson

Torque Completionist Gain all stars in 'Torque'.

Century of Goals Score 100 goals in FIFA 12 match play

Untouchable Complete a whole chapter without dying and using a shrine

Wired Up Place 100 wires.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

Acidic Alchemy In IX, Get a kill with the Acid Trap in each of its craftable locations

Breathing Room Kill a Viper who is strangling a squadmate

Call me Terror-Billy! Beat the game on "Call me Terror-Billy!" difficulty or higher

Crazy Box Pass every mission.

Research and Development Upgrade the Rarity of one common vehicle of the HOT WHEELS™ - Batman Expansion.

Last Blood At the end of Guns of Stygia, kill all the enemies on the walkways before the explosions do

Don't burn yourself out Defeated the Keeper

Come On And ... Slam 10 zombies at once in Outbreak.

Forgive me, sensei Kill Sanjuro Demon without getting hit

The First Harmonic Score your first harmonic in Needle Hills.

Tailor-made Chose a perfectly fitting armor

Egg-stra Devastation! Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.

Chapter 6 Speedrun Complete a Speedrun of Chapter 6 below the target time.

Room to Grow Upgrade a facility

Two's Company, Four's a Party Complete any Adventure level with 4 players.

The First One is the Hardest Get your first 1,000,000+ combo

Head Trauma Use every type of melee weapon on a zombie

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Pack Addict! Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)

A Little Pack Here, a Little Punch There In Voyage of Despair, use the Pack-a-Punch at every possible location in a single game

Sticky Fingers Steal an enemy's item using a weapon equipped with the Steal ability.

That woman is a demon! Kill Aiko Demon without getting hit

Ryder owns Goliath Complete the Plains of Goliath.

Donut Mess with a Cop Unlock Officer Dick.

Prime Directive Shatter Skeletron Prime.

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

High Score In Zombie Rush, obtain a Personal Score of 250,000

Closing the Experiment Log Earn ALL of the platinum Flashback Relics

Alright, Alright Survive until round 10 in Infection.

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

Views From the Abyss STU: Complete "The Spider's Thread" mode.

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

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

Survivor Survive until Round 25 in Outbreak.

Dedicated Collector Collect all Upgrades

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

Going to the Vet Earn the "Veteran" Challenge Collection.
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Up-Lifting On Monorail Factory, kill all enemies whilst riding the lift

Chapter 7 Speedrun Complete a Speedrun of Chapter 7 below the target time.