Al's HatAl's Hat is located in the jail cell to the left of the door leading to Origins on the second floor of the Mob of the Dead area. It currently has no known use or ability that isn't cosmetic.Wolf MaskThis mask gives you purple Stamin-Up which increases sprint duration.In Der Eisendrache, throw a grenade in the hole of the wolf bow upgrade step and a wolf skull will fall.Go back to the skull and it will be floating and spinning. In anti-gravity mode only, kill zombies and parasites around it to collect souls.Viking MaskThis mask gives you purple Juggernog which lets you take an extra hit from enemies.Shoot the numbers 9, 3, and 5 on the clock above the Der Eisendrache Corruption Engine area.Get headshot kills near all 4 urns around the map.Origins, near one of the trucks, beneath a tableTo the left of the Primis room entrance on the wall filled with skullsKino der Toten projector room on a shelfVerrückt kitchen on the ovenKeeper MaskThe Wolf mask must be acquired before you can obtain the Keeper mask.

This hat gives you purple Juggernog, 50% damage reduction from enslaved keepers, 33% more damage to enslaved keepers and the Keeper Protector lasts 30 seconds longer.Build the Keeper Protector and activate it (5000 points)Allow the Keeper Protector to kill multiple zombies until you hear a screeching audio cueMargwa HatThis hat gives you 50% damage resistance from Margwas, 33% extra damage to Margwas, and purple Stamin-Up,Kill three types of Margwa in one shot, per headFury HatThis mask gives you purple Juggernog, 33% damage resistance from Furies, and 50% additional damage to Furies.Headshot 15+ Apothicon FuriesKnight/Templar HelmetThis mask gives you purple Stamin-Up, 50% damage reduction from all boss attacks, 33% extra damage to bosses and no damage from elemental zombies' death effects.Get 50-150 kills using trapsShoot the face mask off of a Panzersoldat as well as destroy its power coreShadowman/Apothicon MaskThis mask gives you purple Juggernog, purple Stamin-Up, 33% damage reduction from all enemies, and 50% extra damage to all enemies.
Do the following steps inside of the Apothicon in the middle green pool while the thick gas is emitted:Kill 50 zombiesKill 5 spidersKill 5 ParasitesKill 10 FuriesKill 5 KeepersTake a Panzer's helmet offTake a Panzer's power core offKill 2 different types of Margwa with the last hit being unique (The way you get the final hit/kill must be different for each Margwa)