Killing Floor

285 achievements

Ultra Rare×177

Very Rare×67

Rare×26

Uncommon×12

Common×3

About Killing Floor's achievements

Killing Floor has 285 Steam achievements, 177 of them ultra-rare — unlocked by under 5% of players. The rarest is "Hangover from Hell", earned by just 1.8% of players. 3 SteamVault members have 100%-completed it so far. Below is the complete achievement list with global rarity and a full achievement difficulty breakdown.

Rarest achievement

1.8%

of players earned "Hangover from Hell"

SteamVault 100%s

members fully completed it

🗺️ Community guides & walkthroughs

Community Ratings

No ratings yet

Difficulty—

Easy → Brutal

Enjoyment—

Meh → Loved it

Grindiness—

No grind → Huge grind

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All Killing Floor achievements

285 achievements

Hangover from Hell

Beat Clandestine on Hell Difficulty

Ultra Rare1.8%

Grotto of Terror

Beat ThrillsChills on Suicidal Difficulty

Ultra Rare1.8%

Hollow of Horror

Beat ThrillsChills on Hell Difficulty

Ultra Rare1.8%

Trappist Monk

Beat Siren's Belch on Hell on Earth Difficulty

Ultra Rare1.9%

King

Beat Stronghold on Hell on Earth Difficulty

Ultra Rare1.9%

Serious vacation

Beat Transit in Objective Mode on Suicidal Difficulty

Ultra Rare1.9%

Moved to Paris!

Beat Transit in Objective Mode on Hell on Earth Difficulty

Ultra Rare1.9%

Burned out

Beat Clandestine on Suicidal Difficulty

Ultra Rare1.9%

Shipping Magnate

Beat Fright Yard in Objective Mode on Hell on Earth Difficulty

Ultra Rare2.0%

Master Brewer

Beat Siren's Belch on Suicidal Difficulty

Ultra Rare2.0%

Prince

Beat Stronghold on Suicidal Difficulty

Ultra Rare2.0%

Business Class

Beat Transit on Suicidal Difficulty

Ultra Rare2.0%

First Class

Beat Transit on Hell on Earth Difficulty

Ultra Rare2.0%

Tachyon Cytoneutralization Explorer

Beat Steamland in Objective Mode on Hell on Earth Difficulty

Ultra Rare2.1%

Crane Operator

Beat Fright Yard in Objective Mode on Suicidal Difficulty

Ultra Rare2.1%

Cerberus

Beat Hell on Suicidal Difficulty

Ultra Rare2.1%

Lucifer

Beat Hell on Hell on Earth Difficulty

Ultra Rare2.1%

Amnesia

Beat Forgotten on Suicidal Difficulty

Ultra Rare2.1%

Dementia

Beat Forgotten on Hell on Earth Difficulty

Ultra Rare2.1%

No Time for Love, Dr. Jones

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

Ultra Rare2.1%

Rack 'em up

Beat Clandestine on Hard Difficulty

Ultra Rare2.1%

Skull Cracker

Clandestine - Destroy 30 skulls

Ultra Rare2.1%

Cavern of Pain

Beat ThrillsChills on Hard Difficulty

Ultra Rare2.1%

Alpha Wave Osteooxidation Activator

Beat Steamland in Objective Mode on Suicidal Difficulty

Ultra Rare2.2%

Wharfinger

Beat Fright Yard on Hell on Earth Difficulty

Ultra Rare2.2%

Rich Evil Uncle

Collect all the Treasure Bags

Ultra Rare2.2%

First Cousins

Beat Hillbilly Horror on Hell on Earth Difficulty

Ultra Rare2.3%

One Giant Leap (Back) for Mankind

Beat Moonbase on Hell on Earth Difficulty

Ultra Rare2.3%

Fractional Neutron Activator

Beat Steamland on Suicidal Difficulty

Ultra Rare2.3%

Advanced Omega Wave Resonance Explorer

Beat Steamland on Hell on Earth Difficulty

Ultra Rare2.3%

Stevedore

Beat Fright Yard on Suicidal Difficulty

Ultra Rare2.3%

Squire

Beat Stronghold on Hard Difficulty

Ultra Rare2.3%

Doctor WHO??

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

Ultra Rare2.3%

Fruit Cake

Complete all new map achievements on Suicidal Difficulty.

Ultra Rare2.4%

Devil Cake

Complete all new map achievements on Hell On Earth Difficulty.

Ultra Rare2.4%

Devil's Co-pilot

Beat Hellride on Hell on Earth Difficulty

Ultra Rare2.4%

First Cousins (Once Removed)

Beat Hillbilly Horror on Suicidal Difficulty

Ultra Rare2.4%

Have my axe

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

Ultra Rare2.4%

One Small Step for Man

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

Ultra Rare2.4%

Amusing Death

Beat Moonbase on Suicidal Difficulty

Ultra Rare2.4%

Truck Driver

Beat Fright Yard in Objective Mode on Hard Difficulty

Ultra Rare2.4%

Micro Brewer

Beat Siren's Belch on Hard Difficulty

Ultra Rare2.4%

Oktoberfest Master

Collect all the Beer Steins

Ultra Rare2.4%

Economy Comfort

Beat Transit on Hard Difficulty

Ultra Rare2.4%

Long weekend

Beat Transit in Objective Mode on Hard Difficulty

Ultra Rare2.4%

All shook up

Destroy all (15) Snow Globes

Ultra Rare2.4%

Diablo Steel Man

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

Ultra Rare2.5%

Commit-ed for life

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

Ultra Rare2.5%

Wolf King of the Dark Forest

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

Ultra Rare2.5%

Warehouse Manager

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

Ultra Rare2.5%

Pile Up

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

Ultra Rare2.5%

Not Dead Yet!

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

Ultra Rare2.5%

Comet

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

Ultra Rare2.5%

SWAT

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

Ultra Rare2.5%

Floodgate to Hell

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

Ultra Rare2.5%

Grandma got Eaten by a Reindeer

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

Ultra Rare2.5%

Anti Freeze

Beat Ice Cave on Hell on Earth Difficulty

Ultra Rare2.5%

Demonic Road

Beat Hellride on Suicidal Difficulty

Ultra Rare2.5%

Oscillating Hydrogen Transition Achiever

Beat Steamland in Objective Mode on Hard Difficulty

Ultra Rare2.5%

The Completely Suicidal War

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

Ultra Rare2.6%

And Back to School

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

Ultra Rare2.6%

Demonic King of the Manor

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

Ultra Rare2.6%

Demon Farmer

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

Ultra Rare2.6%

Boss from Hell

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

Ultra Rare2.6%

Wasted

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

Ultra Rare2.6%

Dear Departed

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

Ultra Rare2.6%

Train Wreck

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

Ultra Rare2.6%

I'm Dying Here!

Win a Long Game on Hospital Horrors on Suicidal Difficulty.

Ultra Rare2.6%

Iceberg

Win a Long Game on Icebreaker on Suicidal Difficulty.

Ultra Rare2.6%

Park Ranger

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

Ultra Rare2.6%

Vigilante

Win a Long Game on Suburbia on Suicidal Difficulty.

Ultra Rare2.6%

Pressure Failure

Win a Long Game on Waterworks on Suicidal Difficulty.

Ultra Rare2.6%

I'm Dreaming of a Red Christmas

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

Ultra Rare2.6%

I'm Making a Note Here, Huge Success

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

Ultra Rare2.6%

On Top of the Big Top

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

Ultra Rare2.6%

On the Rocks

Beat Ice Cave on Suicidal Difficulty

Ultra Rare2.6%

777

Win Fuel on the first try

Ultra Rare2.6%

King Minos

Beat Hell on Hard Difficulty

Ultra Rare2.6%

Bear King of the Dark Forest

Win a Long Game on Wyre, on Suicidal Difficulty.

Ultra Rare2.7%

Warehouse Foreman

Win a Long Game on Crash on Suicidal Difficulty.

Ultra Rare2.7%

Pound Cake

Complete all new map achievements on Hard Difficulty.

Ultra Rare2.7%

This is a Triumph

Win a Long Game on Aperture on Suicidal Difficulty.

Ultra Rare2.7%

Agnosia

Beat Forgotten on Hard Difficulty

Ultra Rare2.7%

Gone clubbing

Beat Clandestine on Normal Difficulty

Ultra Rare2.7%

Cave of Wonder

Beat ThrillsChills on Normal Difficulty

Ultra Rare2.7%

Man of Steel

Win a Long Game on Foundry, on Suicidal Difficulty.

Ultra Rare2.8%

Complete Barking

Win a Long Game on Bedlam, on Suicidal Difficulty.

Ultra Rare2.8%

Waste of Space

Win a Long Game on Biohazard on Suicidal Difficulty.

Ultra Rare2.8%

Departure Gate

Win a Long Game on Departed on Suicidal Difficulty.

Ultra Rare2.8%

3 Ring Circus

Win a Long Game on Abusement Park on Suicidal Difficulty.

Ultra Rare2.8%

Rule The Roost

Get all 6 achievements and unlock Commando Chicken

Ultra Rare2.8%

Trench Warfare

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

Ultra Rare2.8%

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

Ultra Rare2.8%

Fire and Forget

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

Ultra Rare2.8%

Dignity for the Dead

Kill 10 Specimens Feeding on Dead Teammates Corpses.

Ultra Rare2.9%

Alligator Farmer

Win a Long Game on Farm on Suicidal Difficulty.

Ultra Rare2.9%

Mad Boss

Win a Long Game on Offices on Suicidal Difficulty.

Ultra Rare2.9%

Hellish Pub Crawl

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

Ultra Rare2.9%

Scientist from Hell

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

Ultra Rare2.9%

Mountaineer

Win a Long Game on Mountain Pass on Suicidal Difficulty.

Ultra Rare2.9%

This is No Ordinary Rabbit!

Kill 25 Halloween Scrakes in Bedlam

Ultra Rare2.9%

Modified Psychoacceleration Achiever

Beat Steamland on Hard Difficulty

Ultra Rare2.9%

Emperor of the Manor

Win a Long Game on Manor on Suicidal Difficulty.

Ultra Rare3.0%

Dot of Doom

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

Ultra Rare3.0%

Second Cousins

Beat Hillbilly Horror on Hard Difficulty

Ultra Rare3.0%

Blinding Big Brother

Destroy all 30 Cameras

Ultra Rare3.0%

Day-trip

Beat Transit in Objective Mode on Normal Difficulty

Ultra Rare3.0%

Summer of 2009

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

Ultra Rare3.1%

Piece of Cake

Complete all new map achievements on Normal Difficulty.

Ultra Rare3.1%

Burning Irony

Kill 15 Husks with the Husk Cannon

Ultra Rare3.1%

Gang Crew

Beat Fright Yard on Hard Difficulty

Ultra Rare3.1%

Under The Weather

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

Ultra Rare3.1%

Peasant

Beat Stronghold on Normal Difficulty

Ultra Rare3.1%

Not So Silent Night

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

Ultra Rare3.2%

Fugly

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

Ultra Rare3.2%

Stuck in Limbo

Beat Hellride on Hard Difficulty

Ultra Rare3.2%

Grim Reaper

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

Ultra Rare3.2%

Home Brewer

Beat Siren's Belch on Normal Difficulty

Ultra Rare3.2%

Cattle Class

Beat Transit on Normal Difficulty

Ultra Rare3.2%

Suicidal Pub Crawl

Win a Long Game on West London on Suicidal Difficulty.

Ultra Rare3.3%

Explosive Personality

As Demolitions, kill 1000 Specimens with the Pipebomb.

Ultra Rare3.3%

Private Security

Win a Long Game on Suburbia on Hard Difficulty.

Ultra Rare3.3%

Silent Night, Evil Night

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

Ultra Rare3.3%

Science Hater

Transit - Destroy all the DNA vials

Ultra Rare3.3%

Lab Professor

Win a Long Game on Biotics Lab on Suicidal Difficulty.

Ultra Rare3.4%

Missed Connection

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

Ultra Rare3.4%

That Bloody Well Hurts!

Win a Long Game on Hospital Horrors on Hard Difficulty.

Ultra Rare3.4%

Crushed Ice

Win a Long Game on Icebreaker on Hard Difficulty.

Ultra Rare3.4%

Zed October

Win a Long Bedlam Match During the Halloween Event on Hard

Ultra Rare3.4%

Fork Lift Operator

Beat Fright Yard in Objective Mode on Normal Difficulty

Ultra Rare3.4%

The Hard War

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

Ultra Rare3.5%

Burst Pipe

Win a Long Game on Waterworks on Hard Difficulty.

Ultra Rare3.5%

Stay Frosty

Beat Ice Cave on Hard Difficulty

Ultra Rare3.5%

Attempting Re-entry

Beat Moonbase on Hard Difficulty

Ultra Rare3.5%

Golden 3 Crown Note

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

Ultra Rare3.5%

Mr. Perky

Get All of your Perks up to Level 5.

Ultra Rare3.6%

Cracked the Nutcracker!

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

Ultra Rare3.6%

The Big One

Kill 2 scrakes with one shot (M99)

Ultra Rare3.6%

Hide and go Puke

[2013 Summer] Destroy all the Pukey the Clown dolls

Ultra Rare3.6%

Raccoon King of the Dark Forest

Win a Long Game on Wyre, on Hard Difficulty.

Ultra Rare3.7%

Bad Santa

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

Ultra Rare3.7%

Dog and Pony Show

Win a Long Game on Abusement Park on Hard Difficulty.

Ultra Rare3.7%

Game Over, Man!

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

Ultra Rare3.7%

Nitro Boost!

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

Ultra Rare3.7%

Waste Land

Win a Long Game on Biohazard on Hard Difficulty.

Ultra Rare3.8%

Explosion of Love

Heal yourself plus 5 other players with one grenade

Ultra Rare3.8%

Gimli That Axe!

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

Ultra Rare3.8%

Brain Fart

Beat Forgotten on Normal Difficulty

Ultra Rare3.8%

Uber Tuber

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

Ultra Rare3.9%

Arcade Gamer

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

Ultra Rare3.9%

Death

Beat Hell on Normal Difficulty

Ultra Rare3.9%

Long, Hot Summer

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

Ultra Rare4.0%

Warehouse Forklift Operator

Win a Long Game on Crash on Hard Difficulty.

Ultra Rare4.0%

Departure Lounge

Win a Long Game on Departed on Hard Difficulty.

Ultra Rare4.0%

That's not Santa!

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

Ultra Rare4.0%

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).

Ultra Rare4.0%

Still Alive

Win a Long Game on Aperture on Hard Difficulty.

Ultra Rare4.0%

Highlander

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

Ultra Rare4.0%

Turbo Executioner

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

Ultra Rare4.0%

Steel Worker

Win a Long Game on Foundry, on Hard Difficulty.

Ultra Rare4.1%

Gone Mental

Win a Long Game on Bedlam, on Hard Difficulty.

Ultra Rare4.1%

Pound This

Kill 100 Fleshpounds with the AA12.

Ultra Rare4.1%

Italian Meat Pasta

Kill 12 zeds with a full magazine from the Combat Shotgun

Ultra Rare4.3%

Longshoreman

Beat Fright Yard on Normal Difficulty

Ultra Rare4.3%

Simplified Force Adhesion Afficianado

Beat Steamland in Objective Mode on Normal Difficulty

Ultra Rare4.4%

Totally Metal

Transit - Kill 250 Zeds before completing the welding objective

Ultra Rare4.4%

Ex-scientist

Collect all the bile without a contamination

Ultra Rare4.5%

Golden Potato

Get into GLaDOS' core on Aperture.

Ultra Rare4.6%

Astro Buffer Afficiando

Beat Steamland on Normal Difficulty

Ultra Rare4.6%

Full Charge

Have 5 Breaker Boxes 100% repaired at the same time

Ultra Rare4.6%

Cattle Farmer

Win a Long Game on Farm on Hard Difficulty.

Ultra Rare4.7%

Hard Boss

Win a Long Game on Offices on Hard Difficulty.

Ultra Rare4.7%

Juggling Act

Drop 5 different Tier 2 weapons in one wave.

Ultra Rare4.7%

Punk'd

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

Ultra Rare4.7%

Extended Motion Protector

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

Ultra Rare4.7%

Third Cousins

Beat Hillbilly Horror on Normal Difficulty

Ultra Rare4.9%

Soul Collector

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

Ultra Rare5.0%

Merry Men

Kill the Patriarch when everyone is ONLY using Crossbows.

Very Rare5.1%

Gimme a Plaster!

Win a Long Game on Hospital Horrors on Normal Difficulty.

Very Rare5.1%

Lifting a Dumbell

Kill a Circus Husk with a LAW.

Very Rare5.1%

Highway to Heaven

Beat Hellride on Normal Difficulty

Very Rare5.1%

Gone Camping

Win a Long Game on Mountain Pass on Hard Difficulty.

Very Rare5.2%

Finish Him

Hit a Scrake with the M203 Rifle grenade to kill him

Very Rare5.2%

Most Bang for the Buck

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

Very Rare5.2%

Running Late

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

Very Rare5.3%

Neighborhood Watch

Win a Long Game on Suburbia on Normal Difficulty.

Very Rare5.3%

Ice Cube

Win a Long Game on Icebreaker on Normal Difficulty.

Very Rare5.4%

Duke of the Manor

Win a Long Game on Manor on Hard Difficulty.

Very Rare5.5%

Blooper Reel

Turn 500 Zeds into Giblets using the M79.

Very Rare5.5%

We Have Ourselves a Cowboy

Hold dual 9mm, dual hand cannons and Dual Revolvers

Very Rare5.5%

Claw Machine Master

Attach the crane hook within 125 seconds

Very Rare5.5%

The Scene is Zed

Kill 250 Halloween Specimens in Bedlam

Very Rare5.6%

Rippin' It Up

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

Very Rare5.6%

Healing Touch

Heal 200 teammates with the MP7's medication dart.

Very Rare5.8%

Waste Disposal

Win a Long Game on Biohazard on Normal Difficulty.

Very Rare5.9%

But It's All Red!

Collect all 16 Z.E.D. Gun pieces

Very Rare5.9%

Slight Drip

Win a Long Game on Waterworks on Normal Difficulty.

Very Rare6.0%

SCAR'd

Kill 1000 Specimens with the SCAR.

Very Rare6.1%

Snow Cone

Beat Ice Cave on Normal Difficulty

Very Rare6.1%

The Long War

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

Very Rare6.2%

Hot Cross Fun

Kill 25 Burning Specimens with a Crossbow.

Very Rare6.2%

Death To The Mad Scientist

Defeat the Patriarch on Suicidal.

Very Rare6.2%

A Bit Barmy

Win a Long Game on Bedlam, on Normal Difficulty.

Very Rare6.2%

Squirrel King of the Dark Forest

Win a Long Game on Wyre, on Normal Difficulty.

Very Rare6.2%

Walking in A Winter Horror Land

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

Very Rare6.2%

Assistant Homicide

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

Very Rare6.3%

Can't Catch Me!

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

Very Rare6.4%

Bitter Irony

Kill 2 Scrakes with a Chainsaw in a Single Wave.

Very Rare6.5%

Departure Gallery

Win a Long Game on Departed on Normal Difficulty.

Very Rare6.5%

Flea Circus

Win a Long Game on Abusement Park on Normal Difficulty.

Very Rare6.6%

Tin Man

Win a Long Game on Foundry, on Normal Difficulty.

Very Rare6.8%

Sparkling in the Twilight

Kill The Vampire Patriarch Ringmaster in Bedlam

Very Rare6.9%

Carving The Jack O' Lantern

Decapitate a burning Halloween specimen in Bedlam

Very Rare6.9%

Lab Assistant

Win a Long Game on Biotics Lab on Hard Difficulty.

Very Rare7.0%

Killer Junior

Kill 20 crawlers in mid-air with the M79.

Very Rare7.0%

Warehouse Janitor

Win a Long Game on Crash on Normal Difficulty.

Very Rare7.0%

I love ze Healing not ze Hurting

Heal others for 3000 points of health with the MP5 SMG

Very Rare7.1%

Guardian Assault Protector

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

Very Rare7.2%

Science Got Done

Win a Long Game on Aperture on Normal Difficulty.

Very Rare7.3%

Spec Ops

Kill 12 clots with one magazine without reloading (MK23)

Very Rare7.3%

Creepy Crawlies

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

Very Rare7.3%

Here is to us

Beat Moonbase on Normal Difficulty

Very Rare7.4%

Hard Pub Crawl

Win a Long Game on West London on Hard Difficulty.

Very Rare7.6%

Single-shot Equalizer

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

Very Rare8.1%

Master Surgeon

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

Very Rare8.6%

Thin-Ice Pirouette

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

Very Rare8.9%

Multi-pass

Transit - Pick up the door key

Very Rare9.5%

The Boss

Win a Long Game on Offices on Normal Difficulty.

Very Rare10.0%

Chicken Farmer

Win a Long Game on Farm on Normal Difficulty.

Very Rare11.0%

Daytrip

Win a Long Game on Mountain Pass on Normal Difficulty.

Very Rare11.0%

Nail'd!

Kill 4 Stalkers in a game with the Vlad9000 Nailgun

Very Rare11.0%

Lord of the Manor

Win a Long Game on Manor on Normal Difficulty.

Very Rare11.6%

Fiery Personality

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

Very Rare12.2%

Experimentilottacide

Kill 10,000 Specimens.

Very Rare12.8%

Feeling Lucky?

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

Very Rare13.1%

It's What's Inside That Counts

Turn 500 Specimens into Giblets.

Very Rare13.4%

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

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

Very Rare13.4%

The Big Hunt

Kill a Circus Scrake with a Crossbow.

Very Rare14.2%

Keep Those Sneakers Off the Floor!

Kill 20 Stalkers with Explosives.

Very Rare14.5%

Lab Cleaner

Win a Long Game on Biotics Lab on Normal Difficulty.

Very Rare14.6%

Assault Flayer Ordinance

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

Very Rare14.6%

Fending off Mrs. Claws

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

Very Rare14.7%

I Am Become Death

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

Very Rare14.7%

Flaming Hell, That was Close

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

Very Rare14.8%

Getting Chunky

Obliterate 10 Zeds at once with the Pipe Bomb.

Rare15.1%

Fascist Dietitian

Kill 200 Bloats.

Rare15.3%

Burning up the Midway

Kill 10 Circus Clots with a Fire-based weapon.

Rare15.3%

Toasted Jack Frost

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

Rare15.5%

Quarter Pounder With Ease

Turn 5 Fleshpounds into Giblets.

Rare16.0%

Taking Down the Big Top

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

Rare16.0%

Combat Medic

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

Rare16.0%

Careful Spender

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

Rare16.3%

Rudolph, the Bloody Nosed Reindeer

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

Rare16.5%

Eggnog Anyone?

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

Rare16.5%

Single-Load Doom Bombardier

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

Rare16.6%

Deck the Halls with Buckets o' Blood

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

Rare17.1%

Let Them Burn

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

Rare17.6%

Pub Crawl

Win a Long Game on West London on Normal Difficulty.

Rare18.1%

Windjammer Enthusiast

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

Rare18.8%

Meet Your Maker!

Kill 1000 Hillbilly Zeds

Rare19.2%

Homer's Heroes

Kill 100 Sirens.

Rare19.4%

Too Close For Comfort

Finish off a Fleshpound using a Melee Attack.

Rare20.7%

Random Axe of Kindness

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

Rare21.8%

British Superiority

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

Rare21.8%

Elephant Gun

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

Rare22.0%

Seeing Double

Kill 5 Circus Crawlers with a Bullpup in one wave.

Rare23.0%

Historical Remnants

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

Rare23.7%

I Like To Watch

Aquire 5 Minutes of "Zed-Time".

Rare25.4%

Bloody Yanks

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

Rare26.1%

Self Medicator

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

Rare27.0%

Philanthropist

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

Uncommon31.0%

Sparring with a Master

Kill a Circus Gorefast with a Melee weapon.

Uncommon31.5%

Small Hands

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

Uncommon33.6%

Back to Work

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

Uncommon34.0%

Clearing Clown Alley

Kill 5 Circus Bloats in one game.

Uncommon34.9%

Experimentimillicide

Kill 1,000 Specimens.

Uncommon36.6%

Straight Rush

Kill the Patriarch Before he has a Chance to Heal.

Uncommon38.3%

Merry Friggin Christmas

[2010 Xmas] Kill the Christmas Patriarch.

Uncommon40.1%

Who Brings a Gun to a Snow Ball Fight?

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

Uncommon40.4%

Ringmaster

Kill the "Ring Leader" (Circus Patriarch)

Uncommon42.1%

A Bloody Christmas Carol

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

Uncommon44.8%

Social Outburst

Kill 8 Specimens with One Grenade.

Uncommon49.3%

Trick, not Treat

Kill 5 Halloween Specimens with any gun without reloading

Common54.0%

It's Not Easy Being Greasy

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

Common65.7%

Experimenticenticide

Kill 100 Specimens.

Common66.7%