Main easter egg

-turn on the power
-turning the power on will cause Brutus to spawn and after killing him he will drop a key
-with this key you can open previously locked areas
-once the power is on you can activate 4 challenges by interacting with the panel under the monitor in each room
-every challenge will give you a crystal as a reward

-Western room (yellow):
-start the challenge and a ghost will spwan sitting at the table, interact with it
-you'll need to find 5 poker cards around the map (near double tap, desk in the spawn room, table near power switch, central fountain, vertical wall fountain)
-now go back to the ghost and play the cards, he will reward you with Throwing Cards weapon
-finally shoot the dart target in that same room with the throwing cards and below it a drawer will open revealing the yellow crystal

-WW2 room (purple):
-starting the challenge will revive the mangler in the room
-just kill it and it will drop the purple crystal

-SPQR room (blue):
-activate the challenge and you'll be stuck in the room by two walls of fire
-survive for 90 seconds and then collect the blue crystal from the gladiator statue

-Japan room (red):
-start the challenge to activate the three dragon heads
-after feeding all three the red crystal will appear in the mouth of the dragon in the center of the room

-once all 4 crystals have been collected the side easter eggs are unlocked
-in the garage in front of the stairs there's a metal door that you can open with the key dropped by Brutus
-inside there's a sealed stone crypt with an altar on the right
-place the crystals in the altar and after a few seconds pick them up again to open the crypt
-inside you'll find the Pack a Punch machine and 4 pedestals where you can craft the staves
-with the ice staff you can now shoot the glass displays cabinets to freeze the glass, then hit them again to get the weapons inside
-in the gray room (with the plane hanging from the ceiling) there's a display cabinet with a drone inside
-break the glass and pick up the drone
-place the drone on the table in the surveillance room
-you now need a USB cable to connect it to the laptop, the cable is in the gift shop
-after connecting the drone you need to end the round and wait 90 seconds for the drone to be operational
-once it's ready, interact with the drone and follow it across the map
-it will lead you in the garage and it will stop in front of the other metal door
-when the drone stops you need to shoot the vent on the wall to open it
-grab the wind staff and shoot the drone from below to make it fly inside the vent hole
-the drone will explode on the other side opening the door
-inside you'll find a teleporter that requires coordinates
-now grab the lightning staff and go back upstairs in the WW2 room
-shoot the electrical panel in the room with the staff to activate the terminal
-you'll need to input a 4 digit code by interacting with the 4 buttons on the table
-the code is found by reading the highlighted numbers in red on the monitors in each of the 4 challenge rooms,
the order is chronological based on the time period the room is representative of (SPQR -> Japan -> Western -> WW2)
-if you are confused by the explanation the code is: 9312
-after you input the code you can pay 30000 points to print the coordinates for the teleporter

-THIS IS NOT A BUYABLE ENDING, there is still a final step to finish the easter egg

-as soon as you grab the printed coordinates, the bomb in the room will start a countdown to its detonation
-you have 35 seconds to get to the teleporter and insert the coordinates to teleport to safety
-when the countdown ends the nuke will go off killing any player that did not teleport



Side easter eggs

Available only after getting all 4 crystals.
To avoid copyright issues from the songs you can activate a switch in the spawn room that will change them into others by Treyarch.

Song #1 + Special weapon

-there are 3 bottles around the map that you'll have to shoot. They have a mist effect on them to make them more noticeable
-shelf near double tap
-spawn room on a bench
-park on a picnic table
-the song will start right after you shoot all 3 but to get the gun you have to go in the western room and approach the ghost in the corner
-when you get close it will disappear and you'll be able to pick up the Big Iron

Song #2 + Special weapon

-around the map you can find 3 banners with a dragon on them. Shoot them with the fire staff
-Japan room
-surveillance room
-gift shop
-after burning all 3 the song will start playing and in the Japan room there's now a dragon with a katana in its mouth
-the katana has an AoE fire effect that will kill multiple zombies in a horde

Matryoshka dolls
-shoot the 4 dolls around the map
-in the central garden below a stone bench
-spawn room on the chair behind the oval desk
-break room (power room) on a chair
-on the cannon of a tank in the garage
-now head in the gift shop and you can finally buy the dolls for 1000 points

Explosive Cards
-the base throwing cards weapon is obtained either with the challenge or from the mystery box
-the pack a punched version has a monkey bomb effect when it hits a zombie

Magnum (self revive gun, coop only)
-on the left table in the surveillance room
-picking it up will change the last stand weapon for all players to a single shot magnum that revives you if you kill a zombie