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

Kill 5 Circus Crawlers with a Bullpup in one wave.

Kill 5 Circus Bloats in one game.

Kill a Circus Scrake with a Crossbow.

Kill a Circus Husk with a LAW.

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

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

Drop 5 different Tier 2 weapons in one wave.

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

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

Kill 10 Circus Clots with a Fire-based weapon.

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

Kill The Vampire Patriarch Ringmaster in Bedlam

Decapitate a burning Halloween specimen in Bedlam

Kill 250 Halloween Specimens in Bedlam

Win a Long Bedlam Match During the Halloween Event on Hard

Kill 25 Halloween Scrakes in Bedlam

Kill 5 Halloween Specimens with any gun without reloading

Get all 6 achievements and unlock Commando Chicken

Kill 15 Husks with the Husk Cannon

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

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

Hit a Scrake with the M203 Rifle grenade to kill him

Heal others for 3000 points of health with the MP5 SMG