Killing Floor

Hangover from Hell

Beat Clandestine on Hell Difficulty

Hollow of Horror

Beat ThrillsChills on Hell Difficulty

Grotto of Terror

Beat ThrillsChills on Suicidal Difficulty

Burned out

Beat Clandestine on Suicidal Difficulty

Trappist Monk

Beat Siren's Belch on Hell on Earth Difficulty

King

Beat Stronghold on Hell on Earth Difficulty

Moved to Paris!

Beat Transit in Objective Mode on Hell on Earth Difficulty

Serious vacation

Beat Transit in Objective Mode on Suicidal Difficulty

Shipping Magnate

Beat Fright Yard in Objective Mode on Hell on Earth Difficulty

Master Brewer

Beat Siren's Belch on Suicidal Difficulty

Prince

Beat Stronghold on Suicidal Difficulty

First Class

Beat Transit on Hell on Earth Difficulty

Business Class

Beat Transit on Suicidal Difficulty

Skull Cracker

Clandestine - Destroy 30 skulls

No Time for Love, Dr. Jones

Win a short round on KF-Hell playing as or with Harchier Spebbington

Rack 'em up

Beat Clandestine on Hard Difficulty

Dementia

Beat Forgotten on Hell on Earth Difficulty

Amnesia

Beat Forgotten on Suicidal Difficulty

Crane Operator

Beat Fright Yard in Objective Mode on Suicidal Difficulty

Lucifer

Beat Hell on Hell on Earth Difficulty

Cerberus

Beat Hell on Suicidal Difficulty

Tachyon Cytoneutralization Explorer

Beat Steamland in Objective Mode on Hell on Earth Difficulty

Cavern of Pain

Beat ThrillsChills on Hard Difficulty

Rich Evil Uncle

Collect all the Treasure Bags

Wharfinger

Beat Fright Yard on Hell on Earth Difficulty

Alpha Wave Osteooxidation Activator

Beat Steamland in Objective Mode on Suicidal Difficulty

One Giant Leap (Back) for Mankind

Beat Moonbase on Hell on Earth Difficulty

Doctor WHO??

Transit - Get all Objective achievements AND beat KFO Transit on Hard or above to unlock Dr Rachel Clamely.

Stevedore

Beat Fright Yard on Suicidal Difficulty

First Cousins

Beat Hillbilly Horror on Hell on Earth Difficulty

Advanced Omega Wave Resonance Explorer

Beat Steamland on Hell on Earth Difficulty

Fractional Neutron Activator

Beat Steamland on Suicidal Difficulty

Squire

Beat Stronghold on Hard Difficulty

Amusing Death

Beat Moonbase on Suicidal Difficulty

All shook up

Destroy all (15) Snow Globes

Devil Cake

Complete all new map achievements on Hell On Earth Difficulty.

Fruit Cake

Complete all new map achievements on Suicidal Difficulty.

Oktoberfest Master

Collect all the Beer Steins

Have my axe

Kill 30 Fleshpounds with the Dwarfs!? axe with back attacks

One Small Step for Man

Kill 500 Zeds with the Schneidzekk Medic Gun while you are falling

Truck Driver

Beat Fright Yard in Objective Mode on Hard Difficulty

Devil's Co-pilot

Beat Hellride on Hell on Earth Difficulty

First Cousins (Once Removed)

Beat Hillbilly Horror on Suicidal Difficulty

Micro Brewer

Beat Siren's Belch on Hard Difficulty

Economy Comfort

Beat Transit on Hard Difficulty

Long weekend

Beat Transit in Objective Mode on Hard Difficulty

Commit-ed for life

Win a Long Game on Bedlam on Hell on Earth Difficulty.

Warehouse Manager

Win a Long Game on Crash on Hell on Earth Difficulty.

Pile Up

Win a Long Game on Filth's Cross on Hell on Earth Difficulty.

Diablo Steel Man

Win a Long Game on Foundry on Hell on Earth Difficulty.

Demonic Road

Beat Hellride on Suicidal Difficulty

Not Dead Yet!

Win a Long Game on Hospital Horrors on Hell on Earth Difficulty.

Comet

Win a Long Game on Icebreaker on Hell on Earth Difficulty.

Anti Freeze

Beat Ice Cave on Hell on Earth Difficulty

Grandma got Eaten by a Reindeer

Win a Long Game on Santa's Evil Lair on Hell on Earth Difficulty.

Oscillating Hydrogen Transition Achiever

Beat Steamland in Objective Mode on Hard Difficulty

SWAT

Win a Long Game on Suburbia on Hell on Earth Difficulty.

Floodgate to Hell

Win a Long Game on Waterworks on Hell on Earth Difficulty.

Wolf King of the Dark Forest

Win a Long Game on Wyre on Hell on Earth Difficulty.

777

Win Fuel on the first try

I'm Making a Note Here, Huge Success

Win a Long Game on Aperture on Hell on Earth Difficulty.

And Back to School

Complete a Long Game on all 3 Summer 2009 maps on Suicidal Difficulty.

The Completely Suicidal War

Complete a Long Game on all 5 Core Maps on Suicidal Difficulty.

Wasted

Win a Long Game on Biohazard on Hell on Earth Difficulty.

Dear Departed

Win a Long Game on Departed on Hell on Earth Difficulty.

Demon Farmer

Win a Long Game on Farm on Hell on Earth Difficulty.

Train Wreck

Win a Long Game on Filth's Cross on Suicidal Difficulty.

King Minos

Beat Hell on Hard Difficulty

I'm Dying Here!

Win a Long Game on Hospital Horrors on Suicidal Difficulty.

Iceberg

Win a Long Game on Icebreaker on Suicidal Difficulty.

On the Rocks

Beat Ice Cave on Suicidal Difficulty

Demonic King of the Manor

Win a Long Game on Manor on Hell on Earth Difficulty.

Park Ranger

Win a Long Game on Mountain Pass on Hell on Earth Difficulty.

Boss from Hell

Win a Long Game on Offices on Hell on Earth Difficulty.

I'm Dreaming of a Red Christmas

Win a Long Game on Santa's Evil Lair on Suicidal Difficulty.

On Top of the Big Top

Win a Long Game on Abusement Park on Hell on Earth Difficulty.

Vigilante

Win a Long Game on Suburbia on Suicidal Difficulty.

Pressure Failure

Win a Long Game on Waterworks on Suicidal Difficulty.

This is a Triumph

Win a Long Game on Aperture on Suicidal Difficulty.

Pound Cake

Complete all new map achievements on Hard Difficulty.

Gone clubbing

Beat Clandestine on Normal Difficulty

Warehouse Foreman

Win a Long Game on Crash on Suicidal Difficulty.

Agnosia

Beat Forgotten on Hard Difficulty

Cave of Wonder

Beat ThrillsChills on Normal Difficulty

Bear King of the Dark Forest

Win a Long Game on Wyre, on Suicidal Difficulty.

Mrs. Punkd

Get 4 of 6 of the 2013 Summer Event in-game level Achievements, one Standard and one Objective Mode map completion Achievement, plus the Punk'd Achievement to unlock Steampunk Mrs. Foster

Fire and Forget

Kill a Halloween Fleshpound and Scrake in the same explosion with the Seal Squeal Harpoon Bomber or the LAW

Trench Warfare

Set a total of 200 Zeds on fire with the Trench Gun in Hillbilly Horror

Rule The Roost

Get all 6 achievements and unlock Commando Chicken

Complete Barking

Win a Long Game on Bedlam, on Suicidal Difficulty.

Waste of Space

Win a Long Game on Biohazard on Suicidal Difficulty.

Departure Gate

Win a Long Game on Departed on Suicidal Difficulty.

Man of Steel

Win a Long Game on Foundry, on Suicidal Difficulty.

3 Ring Circus

Win a Long Game on Abusement Park on Suicidal Difficulty.

This is No Ordinary Rabbit!

Kill 25 Halloween Scrakes in Bedlam

Dignity for the Dead

Kill 10 Specimens Feeding on Dead Teammates Corpses.

Scientist from Hell

Win a Long Game on Biotics Lab on Hell on Earth Difficulty.

Alligator Farmer

Win a Long Game on Farm on Suicidal Difficulty.

Mountaineer

Win a Long Game on Mountain Pass on Suicidal Difficulty.

Mad Boss

Win a Long Game on Offices on Suicidal Difficulty.

Modified Psychoacceleration Achiever

Beat Steamland on Hard Difficulty

Hellish Pub Crawl

Win a Long Game on West London on Hell on Earth Difficulty.

Blinding Big Brother

Destroy all 30 Cameras

Dot of Doom

Get 25 headshots in a row with the EBR while using the Laser Sight.

Second Cousins

Beat Hillbilly Horror on Hard Difficulty

Emperor of the Manor

Win a Long Game on Manor on Suicidal Difficulty.

Day-trip

Beat Transit in Objective Mode on Normal Difficulty

Under The Weather

Use Bile or the Flamethrower to kill one of each Halloween Zed

Piece of Cake

Complete all new map achievements on Normal Difficulty.

Burning Irony

Kill 15 Husks with the Husk Cannon

Summer of 2009

Complete a Long Game on all 3 Summer 2009 maps on Hard Difficulty.

Gang Crew

Beat Fright Yard on Hard Difficulty

Peasant

Beat Stronghold on Normal Difficulty

Grim Reaper

Get the 6 Special Halloween Achievements plus 1 Hillbilly Horror Map Achievement to unlock the Grim Reaper

Not So Silent Night

[2010 Xmas] Kill a Christmas Siren with an undetonated LAW rocket.

Fugly

Kill one of each type of zed in one round (HSG Shotgun)

Stuck in Limbo

Beat Hellride on Hard Difficulty

Home Brewer

Beat Siren's Belch on Normal Difficulty

Cattle Class

Beat Transit on Normal Difficulty

Science Hater

Transit - Destroy all the DNA vials

Explosive Personality

As Demolitions, kill 1000 Specimens with the Pipebomb.

Silent Night, Evil Night

Win a Long Game on Santa's Evil Lair on Hard Difficulty.

Private Security

Win a Long Game on Suburbia on Hard Difficulty.

Suicidal Pub Crawl

Win a Long Game on West London on Suicidal Difficulty.

Zed October

Win a Long Bedlam Match During the Halloween Event on Hard

Lab Professor

Win a Long Game on Biotics Lab on Suicidal Difficulty.

Missed Connection

Win a Long Game on Filth's Cross on Hard Difficulty.

Fork Lift Operator

Beat Fright Yard in Objective Mode on Normal Difficulty

That Bloody Well Hurts!

Win a Long Game on Hospital Horrors on Hard Difficulty.

Crushed Ice

Win a Long Game on Icebreaker on Hard Difficulty.

Attempting Re-entry

Beat Moonbase on Hard Difficulty

Golden 3 Crown Note

Get all 3 gold bars without the carriers taking damage while they have them

The Hard War

Complete a Long Game on all 5 Core Maps on Hard Difficulty.

Stay Frosty

Beat Ice Cave on Hard Difficulty

Burst Pipe

Win a Long Game on Waterworks on Hard Difficulty.

Hide and go Puke

[2013 Summer] Destroy all the Pukey the Clown dolls

The Big One

Kill 2 scrakes with one shot (M99)

Cracked the Nutcracker!

[2010 Xmas] Land the killing blow on a Christmas Fleshpound with a Knife.

Mr. Perky

Get All of your Perks up to Level 5.

Game Over, Man!

Have 20 Zeds you slowed with the Z.E.D. gun killed

Nitro Boost!

Transit - Get the Nitro to the Objective in 135 seconds or less

Bad Santa

Unlock 10 of the 13 Christmas Achievements along with any Christmas Map achievement.

Dog and Pony Show

Win a Long Game on Abusement Park on Hard Difficulty.

Raccoon King of the Dark Forest

Win a Long Game on Wyre, on Hard Difficulty.

Gimli That Axe!

Get the Not-a-war-hammer Achievement in Dwarfs!?

Explosion of Love

Heal yourself plus 5 other players with one grenade

Waste Land

Win a Long Game on Biohazard on Hard Difficulty.

Brain Fart

Beat Forgotten on Normal Difficulty

Uber Tuber

Expensive but delicious! Brought to you by Dr. Dougley and Lord Ned.

Arcade Gamer

[2013 Summer] Complete the Pop the Clot, the Strong Man and the Grenade Toss games

Death

Beat Hell on Normal Difficulty

Still Alive

Win a Long Game on Aperture on Hard Difficulty.

Tis Better to Give than to Receive

[2010 Xmas] Drop 3 Tier 3 weapons for others (with which they kill at least one Christmas Zed).

That's not Santa!

[2010 Xmas] Kill 3 Christmas Bloats with the Bullpup in one wave.

Turbo Executioner

Kill 5 zeds in ZED time without reloading with Dr. T's LDS or Bullpup

Highlander

Kill a Scrake, a Fleshpound, and the Patriarch with the Claymore Sword within one map

Long, Hot Summer

Complete a Long Game on all 3 Summer 2009 maps on Normal Difficulty.

Warehouse Forklift Operator

Win a Long Game on Crash on Hard Difficulty.

Departure Lounge

Win a Long Game on Departed on Hard Difficulty.

Pound This

Kill 100 Fleshpounds with the AA12.

Gone Mental

Win a Long Game on Bedlam, on Hard Difficulty.

Steel Worker

Win a Long Game on Foundry, on Hard Difficulty.

Italian Meat Pasta

Kill 12 zeds with a full magazine from the Combat Shotgun

Longshoreman

Beat Fright Yard on Normal Difficulty

Totally Metal

Transit - Kill 250 Zeds before completing the welding objective

Simplified Force Adhesion Afficianado

Beat Steamland in Objective Mode on Normal Difficulty

Ex-scientist

Collect all the bile without a contamination

Golden Potato

Get into GLaDOS' core on Aperture.

Full Charge

Have 5 Breaker Boxes 100% repaired at the same time

Astro Buffer Afficiando

Beat Steamland on Normal Difficulty

Juggling Act

Drop 5 different Tier 2 weapons in one wave.

Extended Motion Protector

[2013 Summer] Protect the Ringmaster during the escort mission so that he does not get hit more than 15 times

Punk'd

Unlock 10 of the 13 Circus Achievements along with any Abusement Park achievement.

Cattle Farmer

Win a Long Game on Farm on Hard Difficulty.

Hard Boss

Win a Long Game on Offices on Hard Difficulty.

Third Cousins

Beat Hillbilly Horror on Normal Difficulty

Soul Collector

Free the souls of the 25 Gnomes hidden on Hillbilly Horror in 1 game

Merry Men

Kill the Patriarch when everyone is ONLY using Crossbows.

Lifting a Dumbell

Kill a Circus Husk with a LAW.

Highway to Heaven

Beat Hellride on Normal Difficulty

Gimme a Plaster!

Win a Long Game on Hospital Horrors on Normal Difficulty.

Most Bang for the Buck

Kill 10 Halloween zeds in explosions using the Seeker 6 or the M32 within 5 seconds

Finish Him

Hit a Scrake with the M203 Rifle grenade to kill him

Gone Camping

Win a Long Game on Mountain Pass on Hard Difficulty.

Running Late

Win a Long Game on Filth's Cross on Normal Difficulty.

Neighborhood Watch

Win a Long Game on Suburbia on Normal Difficulty.

Ice Cube

Win a Long Game on Icebreaker on Normal Difficulty.

Claw Machine Master

Attach the crane hook within 125 seconds

Blooper Reel

Turn 500 Zeds into Giblets using the M79.

We Have Ourselves a Cowboy

Hold dual 9mm, dual hand cannons and Dual Revolvers

Duke of the Manor

Win a Long Game on Manor on Hard Difficulty.

Rippin' It Up

Kill a Hillbilly Husk and another Hillbilly Zed in the same shot with the Buzzsaw Bow or M99

The Scene is Zed

Kill 250 Halloween Specimens in Bedlam

Healing Touch

Heal 200 teammates with the MP7's medication dart.

But It's All Red!

Collect all 16 Z.E.D. Gun pieces

Waste Disposal

Win a Long Game on Biohazard on Normal Difficulty.

Slight Drip

Win a Long Game on Waterworks on Normal Difficulty.

SCAR'd

Kill 1000 Specimens with the SCAR.

Snow Cone

Beat Ice Cave on Normal Difficulty

Death To The Mad Scientist

Defeat the Patriarch on Suicidal.

Hot Cross Fun

Kill 25 Burning Specimens with a Crossbow.

The Long War

Complete a Long Game on all 5 Core Maps on Normal Difficulty.

A Bit Barmy

Win a Long Game on Bedlam, on Normal Difficulty.

Walking in A Winter Horror Land

Win a Long Game on Santa's Evil Lair on Normal Difficulty.

Squirrel King of the Dark Forest

Win a Long Game on Wyre, on Normal Difficulty.

Assistant Homicide

Kill 2 Circus Stalkers with a Melee weapon to the back in one wave.

Can't Catch Me!

[2010 Xmas] Kill 2 Christmas Gorefasts with a Melee weapon from behind in one wave.

Bitter Irony

Kill 2 Scrakes with a Chainsaw in a Single Wave.

Departure Gallery

Win a Long Game on Departed on Normal Difficulty.

Flea Circus

Win a Long Game on Abusement Park on Normal Difficulty.

Tin Man

Win a Long Game on Foundry, on Normal Difficulty.

Carving The Jack O' Lantern

Decapitate a burning Halloween specimen in Bedlam

Sparkling in the Twilight

Kill The Vampire Patriarch Ringmaster in Bedlam

Killer Junior

Kill 20 crawlers in mid-air with the M79.

Lab Assistant

Win a Long Game on Biotics Lab on Hard Difficulty.

Warehouse Janitor

Win a Long Game on Crash on Normal Difficulty.

I love ze Healing not ze Hurting

Heal others for 3000 points of health with the MP5 SMG

Guardian Assault Protector

Protect the ringmaster during the defense mission so that he does not get hit more than 15 times

Science Got Done

Win a Long Game on Aperture on Normal Difficulty.

Spec Ops

Kill 12 clots with one magazine without reloading (MK23)

Creepy Crawlies

Kill 15 Hillbilly Crawlers in 1 game with the Tommy Gun or MKb42

Here is to us

Beat Moonbase on Normal Difficulty

Hard Pub Crawl

Win a Long Game on West London on Hard Difficulty.

Single-shot Equalizer

Kill 4 different types of Zeds with headshots with 4 shots from the Long Musket or the M14 without reloading

Master Surgeon

As a Medic, Kill 8 Specimens using a Knife in a Single Wave.

Thin-Ice Pirouette

Complete 10 Waves when the Rest of your Team has Died.

Multi-pass

Transit - Pick up the door key

The Boss

Win a Long Game on Offices on Normal Difficulty.

Nail'd!

Kill 4 Stalkers in a game with the Vlad9000 Nailgun

Chicken Farmer

Win a Long Game on Farm on Normal Difficulty.

Daytrip

Win a Long Game on Mountain Pass on Normal Difficulty.

Lord of the Manor

Win a Long Game on Manor on Normal Difficulty.

Fiery Personality

Set 3 Hillbilly Gorefasts on fire with the Flare Pistol or Trench Gun

Experimentilottacide

Kill 10,000 Specimens.

Feeling Lucky?

Kill a specimen with every shot from your Revolver for one magazine

The L.A.W. That Broke The Camel's Back

Deliver the Killing Blow to the Patriarch with a L.A.W. Rocket.

It's What's Inside That Counts

Turn 500 Specimens into Giblets.

The Big Hunt

Kill a Circus Scrake with a Crossbow.

Keep Those Sneakers Off the Floor!

Kill 20 Stalkers with Explosives.

Assault Flayer Ordinance

Push a scrake back with the direct fire from a Hunting Shotgun or alt fire from the Multi-Chamber ZED Thrower

Lab Cleaner

Win a Long Game on Biotics Lab on Normal Difficulty.

Fending off Mrs. Claws

[2010 Xmas] Kill 3 Christmas Stalkers with a Lever Action Rifle without reloading.

I Am Become Death

Kill 5 Hillbilly Zeds in 10 seconds with the Scythe or Axe

Flaming Hell, That was Close

As Firebug, kill the Husk with the Flamethrower before he hurts anyone.

Getting Chunky

Obliterate 10 Zeds at once with the Pipe Bomb.

Burning up the Midway

Kill 10 Circus Clots with a Fire-based weapon.

Fascist Dietitian

Kill 200 Bloats.

Toasted Jack Frost

[2010 Xmas] Kill the Christmas Scrake with a Fire-based weapon.

Combat Medic

Kill a zed that has injured a player (M7A3 rifle)

Taking Down the Big Top

Kill 4 Circus Zeds in 1 ZED time chain with a Melee weapon.

Quarter Pounder With Ease

Turn 5 Fleshpounds into Giblets.

Careful Spender

Kill 4 Specimens with a Single Shot from a Hunting Shotgun.

Eggnog Anyone?

[2010 Xmas] Get covered in Christmas Bloat Bile and live for 10 seconds on Hard, Suicidal, or Hell on Earth.

Rudolph, the Bloody Nosed Reindeer

[2010 Xmas] Kill a Christmas Crawler with a Crossbow.

Single-Load Doom Bombardier

Kill a ZED with a direct (unexploded) shot from the Orca Bomb Propeller or the M-79/M32

Deck the Halls with Buckets o' Blood

[2010 Xmas] Kill 3 Christmas Zeds in 1 ZED time chain with a Melee weapon.

Let Them Burn

Get 1000 points of burn damage with the MAC-10.

Pub Crawl

Win a Long Game on West London on Normal Difficulty.

Windjammer Enthusiast

Survive 10 seconds after being screamed at by a Circus Siren on Hard or above.

Meet Your Maker!

Kill 1000 Hillbilly Zeds

Homer's Heroes

Kill 100 Sirens.

Too Close For Comfort

Finish off a Fleshpound using a Melee Attack.

Random Axe of Kindness

Kill 15 Specimens with a Fire Axe in a Single Wave.

British Superiority

Kill a zed each with both the Bullpup and FN-Fal

Elephant Gun

Land the killing blow on a Circus Fleshpound with a Pistol.

Seeing Double

Kill 5 Circus Crawlers with a Bullpup in one wave.

Historical Remnants

Kill 6 Zeds with one magazine on an MKb42, without reloading

I Like To Watch

Aquire 5 Minutes of "Zed-Time".

Bloody Yanks

Kill 1 specimen ONLY while expending a full M4 Assault Rifle magazine

Self Medicator

In Co-op Mode, Use Syringe on Yourself 100 Times.

Philanthropist

Give 1,000 Pounds to Teammates who have 50% of Your Cash or Less.

Sparring with a Master

Kill a Circus Gorefast with a Melee weapon.

Small Hands

Kill 3 Circus Clots in a wave with the Lever Action Rifle.

Back to Work

[2010 Xmas] Kill 20 Christmas Clots in one wave.

Clearing Clown Alley

Kill 5 Circus Bloats in one game.

Experimentimillicide

Kill 1,000 Specimens.

Straight Rush

Kill the Patriarch Before he has a Chance to Heal.

Merry Friggin Christmas

[2010 Xmas] Kill the Christmas Patriarch.

Who Brings a Gun to a Snow Ball Fight?

[2010 Xmas] Kill a Christmas Husk with any Pistol.

Ringmaster

Kill the "Ring Leader" (Circus Patriarch)

A Bloody Christmas Carol

Kill 15 XMas Clots, 5 xmas Stalkers, 5 XMas Crawlers, 1 XMas Siren and 1 XMas Bloat.

Social Outburst

Kill 8 Specimens with One Grenade.

Trick, not Treat

Kill 5 Halloween Specimens with any gun without reloading

It's Not Easy Being Greasy

Cause a Specimen to Die by Luring them into Bloat Acid.

Experimenticenticide

Kill 100 Specimens.