ClockworkArtemis

Lineman Complete a Mission intercepted from a cellular tower signal

Collector Obtain all blueprints and key items.

Rising Star Earn 10 stars on one profile

Once upon a time Complete a MOUNTAIN STORY in Alps

Baby Steps Finish Game in Chicken Mode

Focus on the Tasks at Hand Pick a pocket and a lock using the focus ability

Better Than One Score two headshots with one bullet.
"Eat lead...both of you!"

Siege-breaker Help weather the siege of Nordinbad.

The Spider and the Fly In Shadows of Evil, kill 10 zombies ensnared by a Widow’s Wine grenade.

Nightstalker Complete "The Nightstalker's Trail" quest.

The Convict ME2: Successfully recruit the biotic Convict

Deja-Vu Defeat Sting Sniperscope again in Level 3.
"Your present ends now. Again."

Dastardly Deeds Complete all Basso Jobs in The City

Bullet Curving Expert Kill 100 enemies using Curved Bullets

Figments Of My Imagination Complete Chapter 3: "Return to the Megavents"

Demolition Man Destroy 100 Enemy Cars

Building Bridges Stop the Roekaar leader.

Awakened Ambition Completed "The One-Eyed Dragon's Castle."

Peekaboo...I Shot You! Kill 50 enemies with the Sniper Rifle.
"Zoom, pow! Right to the moon."

Weapon Technician Use every Power-Up once. (Race & Battle Arena)

With Our Powers Combined Detonate 10 targets that were primed by a teammate. (Single-Player)

True Hunter Receive the Hunter’s Mark

Aliens Collect all Alien Artifacts.

Easy Pickings Eliminate all players as Ustanak in less than a minute.

Buccaneer Recover the krogan colony ship.

Time Waits For No Kang Complete all races in Chronopolis

You woke up granny! Keep pumping a balloon until it bursts.

The Cat Life Be a cat for 30 minutes straight

Friend of the Woodland Realm Free the elf from his captors in Mirkwood Marsh.

No Pain, No Gain Kill an enemy with an explosive that also damages you.
"That's gonna hurt me more than it hurts you. Well...maybe not quite as much."

Priceless Complete a collectible set

Power Full ME2: Evolve any power

Health Hazard Kill or knockout 10 people using the environment

Plucked Defeat Griffon

Whirlwind You made short work of the tornado.

A Prophecy Fulfilled Found all of the keys from the Crimson Prophecy.

Keymaster Enter the heart of the Solasan temple.

The Krogan ME2: Successfully recruit the krogan

The Red Herring Find out Kyklos' plan

Colony Defense ME2: Defend a human colony from attack

Another Gold Brick in the Wall Collect all Gold Bricks

Executed Complete all mission tasks.

Polluted Platoon Pathfinder Defeated the Polluted Platoon Pathfinder.

Veteran Successfully complete a combined 25 strike team missions or APEX multiplayer mode extractions.

Go veg Beat the Fire Plant

Tentative Peace Complete 15 Villain Sectors

Destroyer of Worlds Cause major destruction

Patient N Killed 20 enemies that were infected by spreading N-rays.

Mods Please Ban Unlock every post in the Bounty Hunter forums.
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The most feared Reach the podium in a total of 50 Quick Races (not unlockable in Split Screen mode).