RockSocksoff

One Man Army Kill 25 enemies while being dragged from the restaurant, without dying or restarting checkpoint

Stick it in My Veins Completely upgraded all abilities.

It's an Order Mark 100 opponents which were then killed by your co-op partners

Under Pressure Activate your first Water Tower.

Chapter VI Leave the Refectory with the Butcher's key

Vehicular Manslaughter Destroy 10 Warden vehicles while on the train

The Sampler Platter Kill a Necromorph with every Weapon in the game (single player only).

You Swine Beat Pigsy to the top of the Decaying Titan.

Who Needs Fire? Escape from the detention center in Claire's Episode One without using the flame-thrower bust.

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

They Went That-a-Way Completed They Went That-a-Way.

Double Punch Kill 25 shielded enemies with a Stun Blast then Plasma Blast combo.

Tough as They Come Purchase all Health Upgrades.

I Don't Have Time for This! It won't stay dead! Better only fight when I have to. (Ch. 7)

The Imaginative Endure Complete the Game on Normal Difficulty

Stunned Knock down a human or stun an android with a non-lethal attack

Just me and my trusty sidearm Reach wave 6 on any Horde Map without picking up a Primary or Secondary weapon.

Lest Ye Be Judged Encounter an Agent of the Nine somewhere in the system.

Exo Survivor Successfully complete the Exo Survival Bonus Wave.

To Bad Decisions! Complete Kerry Eurodyne's storyline.

Unbreakable Will Collect 30 Pieces of Adamantine

Community Outreach Save 15 Humans

You've Made My Hit List Complete 6 Hit List exclusive missions

A Momentum Occasion Unlock all Momentum Abilities as Batgirl, Robin, Nightwing, or Red Hood

DLC: Mars: Slimy Death Hit 10 Arachnids with Crabmones.

Harm's Way You caused 5 unintentional suicides

Practice Makes Perfect Complete all 16 Training Area exercises

Jackal Ace Earn all Jackal weapons and upgrades.

Postmodern Picasso Rupture a total of 200 enemies using the Rocket Launcher

Targets of Opportunity Complete all ship boarding side missions.

Light 'em Up Use the flamethrower

Liberty City Minute You finished the story in less than 30 hours.

Headhunting Complete "Headhunting"

Only a Real Master Beat an opponent while they still have 90% health and you have 10% or less health remaining

Wonderplane Workout Show off what you've learned and finish the Wonderplane's final challenge!

Flip Flop "Flip" a map twice.

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

25 Massacred Kill 25 mobsters.

They're ALL My Favorite Purchase all Praetor Suit Perks in a single save slot

Crossbow Kill First Kill with the Crossbow

Shock to the System Use the stun baton

Crushed Kill an Abadon Mutant Crusher with the Phoenix

Operation Sudden Death Complete Operation Sudden Death.

The Sun Become a legend of the Afterlife.

Juggernaut Kill 100 enemies using charge attacks

True Marksman Win a match with Green Arrow using only arrows

Bloodborne Kill 3 enemies simultaneously using a single mutated body

Practice makes perfect Headshot each of the targets in the gun range in Kaffarov

Dozing Scoop up an enemy with the Dumper Truck

Dream Beyond all flowers lies another room.