Achievement Unlocked Visibility Global Unlocks
SCAR'd
Kill 1000 Specimens with the SCAR. 		6.2%
Most Bang for the Buck
Kill 10 Halloween zeds in explosions using the Seeker 6 or the M32 within 5 seconds 		5.1%
Italian Meat Pasta
Kill 12 zeds with a full magazine from the Combat Shotgun 		4.3%
Creepy Crawlies
Kill 15 Hillbilly Crawlers in 1 game with the Tommy Gun or MKb42 		7.3%
Rippin' It Up
Kill a Hillbilly Husk and another Hillbilly Zed in the same shot with the Buzzsaw Bow or M99 		5.6%
The Scene is Zed
Kill 250 Halloween Specimens in Bedlam 		5.7%
This is No Ordinary Rabbit!
Kill 25 Halloween Scrakes in Bedlam 		2.9%
Not So Silent Night
[2010 Xmas] Kill a Christmas Siren with an undetonated LAW rocket. 		3.2%
Sparkling in the Twilight
Kill The Vampire Patriarch Ringmaster in Bedlam 		6.9%
Lifting a Dumbell
Kill a Circus Husk with a LAW. 		5.1%
Dignity for the Dead
Kill 10 Specimens Feeding on Dead Teammates Corpses. 		2.9%
Totally Metal
Transit - Kill 250 Zeds before completing the welding objective 		4.4%
Combat Medic
Kill a zed that has injured a player (M7A3 rifle) 		16.4%
Mr. Perky
Get All of your Perks up to Level 5. 		3.6%
Nitro Boost!
Transit - Get the Nitro to the Objective in 135 seconds or less 		3.7%
Golden 3 Crown Note
Get all 3 gold bars without the carriers taking damage while they have them 		3.5%
Getting Chunky
Obliterate 10 Zeds at once with the Pipe Bomb. 		15.7%
Thin-Ice Pirouette
Complete 10 Waves when the Rest of your Team has Died. 		9.1%
No Time for Love, Dr. Jones
Win a short round on KF-Hell playing as or with Harchier Spebbington 		2.0%
Fire and Forget
Kill a Halloween Fleshpound and Scrake in the same explosion with the Seal Squeal Harpoon Bomber or the LAW 		2.7%
Trench Warfare
Set a total of 200 Zeds on fire with the Trench Gun in Hillbilly Horror 		2.8%
Bad Santa
Unlock 10 of the 13 Christmas Achievements along with any Christmas Map achievement. 		3.7%
Punk'd
Unlock 10 of the 13 Circus Achievements along with any Abusement Park achievement. 		4.7%
Rule The Roost
Get all 6 achievements and unlock Commando Chicken 		2.8%
Summer of 2009
Complete a Long Game on all 3 Summer 2009 maps on Hard Difficulty. 		3.1%
Long, Hot Summer
Complete a Long Game on all 3 Summer 2009 maps on Normal Difficulty. 		4.1%
And Back to School
Complete a Long Game on all 3 Summer 2009 maps on Suicidal Difficulty. 		2.6%
The Hard War
Complete a Long Game on all 5 Core Maps on Hard Difficulty. 		3.5%
The Long War
Complete a Long Game on all 5 Core Maps on Normal Difficulty. 		6.4%
The Completely Suicidal War
Complete a Long Game on all 5 Core Maps on Suicidal Difficulty. 		2.6%
Gone Mental
Win a Long Game on Bedlam, on Hard Difficulty. 		4.2%
Commit-ed for life
Win a Long Game on Bedlam on Hell on Earth Difficulty. 		2.5%
A Bit Barmy
Win a Long Game on Bedlam, on Normal Difficulty. 		6.3%
Complete Barking
Win a Long Game on Bedlam, on Suicidal Difficulty. 		2.7%
Zed October
Win a Long Bedlam Match During the Halloween Event on Hard 		3.4%