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Secret Achievements (Show)
Killing Floor achievements
Win a Long Bedlam Match During the Halloween Event on Hard
Wolf King of the Dark Forest
Win a Long Game on Wyre on Hell on Earth Difficulty.
Survive 10 seconds after being screamed at by a Circus Siren on Hard or above.
Who Brings a Gun to a Snow Ball Fight?
[2010 Xmas] Kill a Christmas Husk with any Pistol.
Beat Fright Yard on Hell on Earth Difficulty
We Have Ourselves a Cowboy
Hold dual 9mm, dual hand cannons and Dual Revolvers
Win a Long Game on Biohazard on Hell on Earth Difficulty.
Waste of Space
Win a Long Game on Biohazard on Suicidal Difficulty.
Win a Long Game on Biohazard on Hard Difficulty.
Win a Long Game on Biohazard on Normal Difficulty.
Win a Long Game on Crash on Hell on Earth Difficulty.
Win a Long Game on Crash on Normal Difficulty.
Warehouse Forklift Operator
Win a Long Game on Crash on Hard Difficulty.
Win a Long Game on Crash on Suicidal Difficulty.
Walking in A Winter Horror Land
Win a Long Game on Santa's Evil Lair on Normal Difficulty.
Win a Long Game on Suburbia on Suicidal Difficulty.
Under The Weather
Use Bile or the Flamethrower to kill one of each Halloween Zed
Expensive but delicious! Brought to you by Dr. Dougley and Lord Ned.
Kill 5 zeds in ZED time without reloading with Dr. T's LDS or Bullpup
Beat Fright Yard in Objective Mode on Hard Difficulty
Trick, not Treat
Kill 5 Halloween Specimens with any gun without reloading
Set a total of 200 Zeds on fire with the Trench Gun in Hillbilly Horror
Beat Siren's Belch on Hell on Earth Difficulty
Win a Long Game on Filth's Cross on Suicidal Difficulty.
Transit - Kill 250 Zeds before completing the welding objective
Too Close For Comfort
Finish off a Fleshpound using a Melee Attack.
Toasted Jack Frost
[2010 Xmas] Kill the Christmas Scrake with a Fire-based weapon.
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).
Win a Long Game on Foundry, on Normal Difficulty.
This is No Ordinary Rabbit!
Kill 25 Halloween Scrakes in Bedlam
This is a Triumph
Win a Long Game on Aperture on Suicidal Difficulty.
Beat Hillbilly Horror on Normal Difficulty
Complete 10 Waves when the Rest of your Team has Died.
The Scene is Zed
Kill 250 Halloween Specimens in Bedlam
The Long War
Complete a Long Game on all 5 Core Maps on Normal Difficulty.
The L.A.W. That Broke The Camel's Back
Deliver the Killing Blow to the Patriarch with a L.A.W. Rocket.
The Hard War
Complete a Long Game on all 5 Core Maps on Hard Difficulty.
The Completely Suicidal War
Complete a Long Game on all 5 Core Maps on Suicidal Difficulty.
Win a Long Game on Offices on Normal Difficulty.
The Big One
Kill 2 scrakes with one shot (M99)
The Big Hunt
Kill a Circus Scrake with a Crossbow.
That's not Santa!
[2010 Xmas] Kill 3 Christmas Bloats with the Bullpup in one wave.
That Bloody Well Hurts!
Win a Long Game on Hospital Horrors on Hard Difficulty.
Taking Down the Big Top
Kill 4 Circus Zeds in 1 ZED time chain with a Melee weapon.
Tachyon Cytoneutralization Explorer
Beat Steamland in Objective Mode on Hell on Earth Difficulty
Win a Long Game on Suburbia on Hell on Earth Difficulty.
Summer of 2009
Complete a Long Game on all 3 Summer 2009 maps on Hard Difficulty.
Suicidal Pub Crawl
Win a Long Game on West London on Suicidal Difficulty.
Stuck in Limbo
Beat Hellride on Hard Difficulty
Kill the Patriarch Before he has a Chance to Heal.
Win a Long Game on Aperture on Hard Difficulty.
Beat Fright Yard on Suicidal Difficulty
Win a Long Game on Foundry, on Hard Difficulty.
Beat Ice Cave on Hard Difficulty
Squirrel King of the Dark Forest
Win a Long Game on Wyre, on Normal Difficulty.
Beat Stronghold on Hard Difficulty
Kill 12 clots with one magazine without reloading (MK23)
Sparring with a Master
Kill a Circus Gorefast with a Melee weapon.
Sparkling in the Twilight
Kill The Vampire Patriarch Ringmaster in Bedlam
Free the souls of the 25 Gnomes hidden on Hillbilly Horror in 1 game
Kill 8 Specimens with One Grenade.
Beat Ice Cave on Normal Difficulty
Kill 3 Circus Clots in a wave with the Lever Action Rifle.
Win a Long Game on Waterworks on Normal Difficulty.
Clandestine - Destroy 30 skulls
Kill 4 different types of Zeds with headshots with 4 shots from the Long Musket or the M14 without reloading
Single-Load Doom Bombardier
Kill a ZED with a direct (unexploded) shot from the Orca Bomb Propeller or the M-79/M32
Simplified Force Adhesion Afficianado
Beat Steamland in Objective Mode on Normal Difficulty
Silent Night, Evil Night
Win a Long Game on Santa's Evil Lair on Hard Difficulty.
Beat Fright Yard in Objective Mode on Hell on Earth Difficulty
Beat Transit in Objective Mode on Suicidal Difficulty
In Co-op Mode, Use Syringe on Yourself 100 Times.
Kill 5 Circus Crawlers with a Bullpup in one wave.
Beat Hillbilly Horror on Hard Difficulty
Scientist from Hell
Win a Long Game on Biotics Lab on Hell on Earth Difficulty.
Transit - Destroy all the DNA vials
Science Got Done
Win a Long Game on Aperture on Normal Difficulty.
Kill 1000 Specimens with the SCAR.
Win a Long Game on Filth's Cross on Normal Difficulty.
Rule The Roost
Get all 6 achievements and unlock Commando Chicken
Rudolph, the Bloody Nosed Reindeer
[2010 Xmas] Kill a Christmas Crawler with a Crossbow.
Rippin' It Up
Kill a Hillbilly Husk and another Hillbilly Zed in the same shot with the Buzzsaw Bow or M99
Kill the "Ring Leader" (Circus Patriarch)
Rich Evil Uncle
Collect all the Treasure Bags
Random Axe of Kindness
Kill 15 Specimens with a Fire Axe in a Single Wave.
Rack 'em up
Beat Clandestine on Hard Difficulty
Raccoon King of the Dark Forest
Win a Long Game on Wyre, on Hard Difficulty.
Quarter Pounder With Ease
Turn 5 Fleshpounds into Giblets.
Unlock 10 of the 13 Circus Achievements along with any Abusement Park achievement.
Win a Long Game on West London on Normal Difficulty.
Win a Long Game on Suburbia on Hard Difficulty.
Beat Stronghold on Suicidal Difficulty
Win a Long Game on Waterworks on Suicidal Difficulty.
Kill 100 Fleshpounds with the AA12.
Complete all new map achievements on Hard Difficulty.
Win a Long Game on Filth's Cross on Hell on Earth Difficulty.
Piece of Cake
Complete all new map achievements on Normal Difficulty.
Give 1,000 Pounds to Teammates who have 50% of Your Cash or Less.
Beat Stronghold on Normal Difficulty
Win a Long Game on Mountain Pass on Hell on Earth Difficulty.
Oscillating Hydrogen Transition Achiever
Beat Steamland in Objective Mode on Hard Difficulty
One Small Step for Man
Kill 500 Zeds with the Schneidzekk Medic Gun while you are falling
One Giant Leap (Back) for Mankind
Beat Moonbase on Hell on Earth Difficulty
On Top of the Big Top
Win a Long Game on Abusement Park on Hell on Earth Difficulty.
On the Rocks
Beat Ice Cave on Suicidal Difficulty
Collect all the Beer Steins
Not So Silent Night
[2010 Xmas] Kill a Christmas Siren with an undetonated LAW rocket.
Not Dead Yet!
Win a Long Game on Hospital Horrors on Hell on Earth Difficulty.
No Time for Love, Dr. Jones
Win a short round on KF-Hell playing as or with Harchier Spebbington
Transit - Get the Nitro to the Objective in 135 seconds or less
Win a Long Game on Suburbia on Normal Difficulty.
Kill 4 Stalkers in a game with the Vlad9000 Nailgun
Transit - Pick up the door key
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
Get All of your Perks up to Level 5.
Moved to Paris!
Beat Transit in Objective Mode on Hell on Earth Difficulty
Win a Long Game on Mountain Pass on Suicidal Difficulty.
Most Bang for the Buck
Kill 10 Halloween zeds in explosions using the Seeker 6 or the M32 within 5 seconds
Modified Psychoacceleration Achiever
Beat Steamland on Hard Difficulty
Win a Long Game on Filth's Cross on Hard Difficulty.
Beat Siren's Belch on Hard Difficulty
Kill the Patriarch when everyone is ONLY using Crossbows.
Merry Friggin Christmas
[2010 Xmas] Kill the Christmas Patriarch.
Meet Your Maker!
Kill 1000 Hillbilly Zeds
As a Medic, Kill 8 Specimens using a Knife in a Single Wave.
Beat Siren's Belch on Suicidal Difficulty
Man of Steel
Win a Long Game on Foundry, on Suicidal Difficulty.
Win a Long Game on Offices on Suicidal Difficulty.
Beat Hell on Hell on Earth Difficulty
Lord of the Manor
Win a Long Game on Manor on Normal Difficulty.
Beat Fright Yard on Normal Difficulty
Long, Hot Summer
Complete a Long Game on all 3 Summer 2009 maps on Normal Difficulty.
Beat Transit in Objective Mode on Hard Difficulty
Lifting a Dumbell
Kill a Circus Husk with a LAW.
Let Them Burn
Get 1000 points of burn damage with the MAC-10.
Win a Long Game on Biotics Lab on Suicidal Difficulty.
Win a Long Game on Biotics Lab on Normal Difficulty.
Win a Long Game on Biotics Lab on Hard Difficulty.
Beat Hell on Hard Difficulty
Beat Stronghold on Hell on Earth Difficulty
Kill 20 crawlers in mid-air with the M79.
Keep Those Sneakers Off the Floor!
Kill 20 Stalkers with Explosives.
Drop 5 different Tier 2 weapons in one wave.
Italian Meat Pasta
Kill 12 zeds with a full magazine from the Combat Shotgun
It's What's Inside That Counts
Turn 500 Specimens into Giblets.
It's Not Easy Being Greasy
Cause a Specimen to Die by Luring them into Bloat Acid.
Win a Long Game on Icebreaker on Suicidal Difficulty.
Win a Long Game on Icebreaker on Normal Difficulty.
I'm Making a Note Here, Huge Success
Win a Long Game on Aperture on Hell on Earth Difficulty.
I'm Dying Here!
Win a Long Game on Hospital Horrors on Suicidal Difficulty.
I'm Dreaming of a Red Christmas
Win a Long Game on Santa's Evil Lair on Suicidal Difficulty.
I love ze Healing not ze Hurting
Heal others for 3000 points of health with the MP5 SMG
I Like To Watch
Aquire 5 Minutes of "Zed-Time".
I Am Become Death
Kill 5 Hillbilly Zeds in 10 seconds with the Scythe or Axe
Hot Cross Fun
Kill 25 Burning Specimens with a Crossbow.
Kill 100 Sirens.
Beat Siren's Belch on Normal Difficulty
Hollow of Horror
Beat ThrillsChills on Hell Difficulty
Kill 6 Zeds with one magazine on an MKb42, without reloading
Highway to Heaven
Beat Hellride on Normal Difficulty
Kill a Scrake, a Fleshpound, and the Patriarch with the Claymore Sword within one map
Hide and go Puke
[2013 Summer] Destroy all the Pukey the Clown dolls
Here is to us
Beat Moonbase on Normal Difficulty
Hellish Pub Crawl
Win a Long Game on West London on Hell on Earth Difficulty.
Heal 200 teammates with the MP7's medication dart.
Have my axe
Kill 30 Fleshpounds with the Dwarfs!? axe with back attacks
Hard Pub Crawl
Win a Long Game on West London on Hard Difficulty.
Win a Long Game on Offices on Hard Difficulty.
Hangover from Hell
Beat Clandestine on Hell Difficulty
Guardian Assault Protector
Protect the ringmaster during the defense mission so that he does not get hit more than 15 times
Grotto of Terror
Beat ThrillsChills on Suicidal Difficulty
Get the 6 Special Halloween Achievements plus 1 Hillbilly Horror Map Achievement to unlock the Grim Reaper
Grandma got Eaten by a Reindeer
Win a Long Game on Santa's Evil Lair on Hell on Earth Difficulty.
Win a Long Game on Bedlam, on Hard Difficulty.
Beat Clandestine on Normal Difficulty
Win a Long Game on Mountain Pass on Hard Difficulty.
Get into GLaDOS' core on Aperture.
Golden 3 Crown Note
Get all 3 gold bars without the carriers taking damage while they have them
Gimme a Plaster!
Win a Long Game on Hospital Horrors on Normal Difficulty.
Gimli That Axe!
Get the Not-a-war-hammer Achievement in Dwarfs!?
Obliterate 10 Zeds at once with the Pipe Bomb.
Beat Fright Yard on Hard Difficulty
Game Over, Man!
Have 20 Zeds you slowed with the Z.E.D. gun killed
Have 5 Breaker Boxes 100% repaired at the same time
Kill one of each type of zed in one round (HSG Shotgun)
Complete all new map achievements on Suicidal Difficulty.
Fractional Neutron Activator
Beat Steamland on Suicidal Difficulty
Fork Lift Operator
Beat Fright Yard in Objective Mode on Normal Difficulty
Floodgate to Hell
Win a Long Game on Waterworks on Hell on Earth Difficulty.
Win a Long Game on Abusement Park on Normal Difficulty.
Flaming Hell, That was Close
As Firebug, kill the Husk with the Flamethrower before he hurts anyone.
First Cousins (Once Removed)
Beat Hillbilly Horror on Suicidal Difficulty
Beat Hillbilly Horror on Hell on Earth Difficulty
Beat Transit on Hell on Earth Difficulty
Fire and Forget
Kill a Halloween Fleshpound and Scrake in the same explosion with the Seal Squeal Harpoon Bomber or the LAW
Hit a Scrake with the M203 Rifle grenade to kill him
Set 3 Hillbilly Gorefasts on fire with the Flare Pistol or Trench Gun
Fending off Mrs. Claws
[2010 Xmas] Kill 3 Christmas Stalkers with a Lever Action Rifle without reloading.
Kill a specimen with every shot from your Revolver for one magazine
Kill 200 Bloats.
Extended Motion Protector
[2013 Summer] Protect the Ringmaster during the escort mission so that he does not get hit more than 15 times
As Demolitions, kill 1000 Specimens with the Pipebomb.
Explosion of Love
Heal yourself plus 5 other players with one grenade
Kill 1,000 Specimens.
Kill 10,000 Specimens.
Kill 100 Specimens.
Collect all the bile without a contamination
Emperor of the Manor
Win a Long Game on Manor on Suicidal Difficulty.
Land the killing blow on a Circus Fleshpound with a Pistol.
[2010 Xmas] Get covered in Christmas Bloat Bile and live for 10 seconds on Hard, Suicidal, or Hell on Earth.
Beat Transit on Hard Difficulty
Duke of the Manor
Win a Long Game on Manor on Hard Difficulty.
Dot of Doom
Get 25 headshots in a row with the EBR while using the Laser Sight.
Dog and Pony Show
Win a Long Game on Abusement Park on Hard Difficulty.
Transit - Get all Objective achievements AND beat KFO Transit on Hard or above to unlock Dr Rachel Clamely.
Dignity for the Dead
Kill 10 Specimens Feeding on Dead Teammates Corpses.
Diablo Steel Man
Win a Long Game on Foundry on Hell on Earth Difficulty.
Beat Hellride on Hell on Earth Difficulty
Complete all new map achievements on Hell On Earth Difficulty.
Win a Long Game on Departed on Hard Difficulty.
Win a Long Game on Departed on Suicidal Difficulty.
Win a Long Game on Departed on Normal Difficulty.
Beat Hellride on Suicidal Difficulty
Demonic King of the Manor
Win a Long Game on Manor on Hell on Earth Difficulty.
Win a Long Game on Farm on Hell on Earth Difficulty.
Beat Forgotten on Hell on Earth Difficulty
Deck the Halls with Buckets o' Blood
[2010 Xmas] Kill 3 Christmas Zeds in 1 ZED time chain with a Melee weapon.
Death To The Mad Scientist
Defeat the Patriarch on Suicidal.
Beat Hell on Normal Difficulty
Win a Long Game on Departed on Hell on Earth Difficulty.
Win a Long Game on Mountain Pass on Normal Difficulty.
Beat Transit in Objective Mode on Normal Difficulty
Win a Long Game on Icebreaker on Hard Difficulty.
Kill 15 Hillbilly Crawlers in 1 game with the Tommy Gun or MKb42
Beat Fright Yard in Objective Mode on Suicidal Difficulty
Cracked the Nutcracker!
[2010 Xmas] Land the killing blow on a Christmas Fleshpound with a Knife.
Win a Long Game on Bedlam, on Suicidal Difficulty.
Commit-ed for life
Win a Long Game on Bedlam on Hell on Earth Difficulty.
Win a Long Game on Icebreaker on Hell on Earth Difficulty.
Kill a zed that has injured a player (M7A3 rifle)
Clearing Clown Alley
Kill 5 Circus Bloats in one game.
Claw Machine Master
Attach the crane hook within 125 seconds
Win a Long Game on Farm on Normal Difficulty.
Beat Hell on Suicidal Difficulty
Cavern of Pain
Beat ThrillsChills on Hard Difficulty
Cave of Wonder
Beat ThrillsChills on Normal Difficulty
Win a Long Game on Farm on Hard Difficulty.
Beat Transit on Normal Difficulty
Carving The Jack O' Lantern
Decapitate a burning Halloween specimen in Bedlam
Kill 4 Specimens with a Single Shot from a Hunting Shotgun.
Can't Catch Me!
[2010 Xmas] Kill 2 Christmas Gorefasts with a Melee weapon from behind in one wave.
But It's All Red!
Collect all 16 Z.E.D. Gun pieces
Beat Transit on Suicidal Difficulty
Win a Long Game on Waterworks on Hard Difficulty.
Burning up the Midway
Kill 10 Circus Clots with a Fire-based weapon.
Kill 15 Husks with the Husk Cannon
Beat Clandestine on Suicidal Difficulty
Kill a zed each with both the Bullpup and FN-Fal
Beat Forgotten on Normal Difficulty
Boss from Hell
Win a Long Game on Offices on Hell on Earth Difficulty.
Turn 500 Zeds into Giblets using the M79.
Kill 1 specimen ONLY while expending a full M4 Assault Rifle magazine
Blinding Big Brother
Destroy all 30 Cameras
Kill 2 Scrakes with a Chainsaw in a Single Wave.
Bear King of the Dark Forest
Win a Long Game on Wyre, on Suicidal Difficulty.
Unlock 10 of the 13 Christmas Achievements along with any Christmas Map achievement.
Back to Work
[2010 Xmas] Kill 20 Christmas Clots in one wave.
Beat Moonbase on Hard Difficulty
Astro Buffer Afficiando
Beat Steamland on Normal Difficulty
Kill 2 Circus Stalkers with a Melee weapon to the back in one wave.
Assault Flayer Ordinance
Push a scrake back with the direct fire from a Hunting Shotgun or alt fire from the Multi-Chamber ZED Thrower
[2013 Summer] Complete the Pop the Clot, the Strong Man and the Grenade Toss games
Beat Ice Cave on Hell on Earth Difficulty
And Back to School
Complete a Long Game on all 3 Summer 2009 maps on Suicidal Difficulty.
Beat Moonbase on Suicidal Difficulty
Beat Forgotten on Suicidal Difficulty
Alpha Wave Osteooxidation Activator
Beat Steamland in Objective Mode on Suicidal Difficulty
Win a Long Game on Farm on Suicidal Difficulty.
All shook up
Destroy all (15) Snow Globes
Beat Forgotten on Hard Difficulty
Advanced Omega Wave Resonance Explorer
Beat Steamland on Hell on Earth Difficulty
A Bloody Christmas Carol
Kill 15 XMas Clots, 5 xmas Stalkers, 5 XMas Crawlers, 1 XMas Siren and 1 XMas Bloat.
A Bit Barmy
Win a Long Game on Bedlam, on Normal Difficulty.
Win Fuel on the first try
3 Ring Circus
Win a Long Game on Abusement Park on Suicidal Difficulty.