Eight wearable items
Revelations hides eight hats, helmets and masks. Except Al’s Hat, each one is unlocked by a hidden challenge, then picked up from a mannequin on the Kino der Toten stage. Their health and sprint bonuses show as a purple Juggernog or a purple Stamin-Up on a second perk bar: weaker than the real perks, but they add up with them without taking a perk slot. In co-op, progress is shared and every player can wear the same item. Wearing three different ones earns the Wardrobe Change achievement.

Al’s Hat
The hat of Albert “Weasel” Arlington, in a cell on the second floor of the Mob of the Dead cell block. Available from the start, purely cosmetic.

Dire Wolf Head
Turn on low gravity in Der Eisendrache, throw a grenade into the large hole high on the wall near the Kuda, then kill 15 zombies near the wolf skull that falls, while low gravity lasts. Purple Stamin-Up.

Helmet of Siegfried
Shoot IX, III and V on the clock floating above the Der Eisendrache pyramid, then fill four urns with six close headshots each: in Der Eisendrache, next to the Pharo in Origins, in the Verrückt kitchen and in the Kino projector room. Purple Juggernog.

Margwa Head
Kill a regular, a Fire and a Void Margwa, each with one hit per head and without Wonder Weapons. Half damage from Margwas, a third more damage to them, purple Stamin-Up, and no stun from the Void skulls and marks.

Fury Head
Kill about 15 Furies with headshots, outside of the engine overrides. Less damage from Furies, more damage to them, purple Juggernog.

Keeper Skull Head
Let the Keeper Protector kill about 30 zombies, then kill about seven Enslaved Keepers with a Corruption Turret, a step skipped if the Dire Wolf Head is already unlocked. Purple Juggernog, and the Keeper Protector lasts 30 seconds longer.
Apothicon Mask
Inside the Giant Apothicon, standing in the stomach acid while its dense green smoke is out, kill 15 Parasites, 5 Enslaved Keepers, 15 Spiders, 10 Furies, 50 zombies and 3 Margwas of at least two kinds. Purple Juggernog and Stamin-Up, half again as much damage dealt and a third less taken.
Helmet of the King
On Panzersoldats, destroy a chest power core and a face armour, then kill about 50 zombies with the traps. Half damage from bosses, a third more damage to them, purple Stamin-Up, and no harm from elemental zombies, shock mines or Void skulls.
The Apothicon Mask is the strongest: with it, a player with Juggernog takes ten hits from a normal zombie to go down, four without. None of the items can be unlocked from the House alone.
