Ossi2k

Trauma Center Defeat Dr. Benedict.

Collateral Considered Complete 'The Package' without any civillian casualties

Delivered Complete mission contract 'The Package'

Who Needs a Map? Endurance Challenge: Locate 5 crypts

You've Got The Power Collect All Energy Upgrades

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

Ride Shotgun Get 5 kills with a shotgun.
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What Pride Had Wrought Reach an ancient ruin before your enemies.

Rattle the Hive Bait 10 Ghûl mounds.

It Takes Two to Tango Chain a 40-defeated combo in Team Slayers.

Teamwork Complete a mission with co-op player.

This! Is! Keystone! Kick an enemy into his death

Barkeep Began Sammy's Renovation

Resistor Kill 500 enemies.

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

Let him do the job In one run of "Lucha Libre Get Away", let the Luchador kill 10 enemies for you

My Precious Collect all the hidden treasure within an Episode

Red Wrath and Beyond Defeat Psychoreaver.

Sunstone Medal Defeated Katrina's Mech using Sunstone Knack

T-Bone: Friends in Need Complete Act 1

Sting like a bee Kill a Breacher, a Rocket Gunner and a Sniper with CQC while in stealth.

Studious Explorer You've discovered 40% of the Explorer Notes on the ARK!

Swatter Kill 20 drones.

A Game of Chicken Crash into a flying airplane with your own plane

Greaser Get 5 kills with an SMG.
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Unstoppable Arsenal Completely upgrade all weapons.

DLC: Zombies: Killer BeeZ Destroy all the Zom-bee nests in Laboratory of the Dead.

File R-05: Status - Closed Complete File R-05: Escape From Denver.

“Worlds of Hurt” – Tough Guy Rescued the Little Sister in “Worlds of Hurt” using only plasmids, tonics, the wrench, and the research camera, on Medium or higher difficulty

Creator Create a skater using the CAS system.

Island Queen Complete all objectives in the Plover Island Complex

That Was Close Win a race with less than 0.1s of difference from the runner-up

Cloak & Daggers Deal with the man in the shadows.

Adamant Will Felled a heavyweight of the lowerworld wilds.

Machine Crusher Defeat NANCY-MI847J.

Class-A Ninja Complete game on Normal difficulty

Now what? Complete Cause and Effect

Bouncer Keep Chimeran forces from entering the Brewpub

Army of One Win 15 matches in Slayers.

Don't Stop Running Finish the game in three hours.

Go breaking my heart Collected 9 Tyrant Hearts

Sick of Fish Visit someone in jail

Cuts Like A Knife Collect All Kunai Upgrades

A Friend in Need Play Co-op mode

Submarine Power Collect Power-up

CQC FTW Finish the game using only your knife (no lighter, Defensive Items, and stomping zombie heads).

Friend Indeed Save your captured partner ten times in the main campaign.

The Caped Crusader Win with Batman using every special move and his Supermove

Pinball Dreams Destroy a vehicle with the PBX Auto-Slug 4 shotgun's "Ricochet" secondary fire

Veteran Paleontologist You unlocked the Dossiers of each of ARK's initial Specimens!