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Call of Duty: Black Ops Cold War

How to complete the Firebase Z Easter Egg in Black Ops Cold War Zombies

Here’s how to complete the Easter Egg and unlock the hidden cutscene in Black Ops Cold War Zombies’ Firebase Z.

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bocw zombies Firebase Z gameplay

Like all good Zombies maps, Firebase Z has a lengthy Easter Egg to complete that will unlock a secret cutscene, as well as a calling card to show off. Here’s how to complete it.

The Firebase Z Easter Egg went live on February 5 so everyone could begin on an even playing field. It didn’t take long for the most skilled hunters to solve it, but we’ve broken it down into easy-to-follow steps so you can solve it yourself. Buckle in though, it might take a while.

Before beginning the Easter Egg, you need to turn on the power, unlock the Pack-a-Punch machine, and get the RAI K-84 Wonder Weapon.

You don’t need to get the RAI K-84 before starting the Easter Egg, but it’ll be easier in the early rounds so we recommend getting it early by following our guide.

Here’s how to complete the Black Ops Cold War Firebase Z Easter Egg.

Step 1: Speak to Ravenov and Peck

Once the Pack-a-Punch machine is online, speak to Ravenov who will be marked with a waypoint. After talking to Ravenov, speak to Doctor Peck who’s located in the Mission Control Room where the leftmost Aether Reactor is.

Head back to the village and speak with Ravenov again, and he’ll give you a keycard. After picking it up, you’ll need to head to three lockers around the map.

Step 2: Open the lockers

The first locker can be found directly opposite Ravenov’s office beside the Quick Revive perk. Simply use the interact button to open it with the keycard, and take the Serum from inside.

quick revive bocw zombies firebase z

The second locker is in the Colonel’s Office above the right-most Aether Reactor. Again, open it and take the Serum.

The third locker is found through the gate at the left of the Portal. Go into building directly in front, and you’ll find the locker on the bottom floor.

Step 3: Create Truth Serum

After taking the Serum from the final locker, head to the Field Hospital near the Barracks by the Heli-Pad. There will be a Chemical Mixer on the table. Interact with it to insert the Serums.

The Serums will begin to mix and you’ll need to fight off a hoard of Hellhounds while you wait. Once the dogs have been defeated, you can pick up the Chemical Mixer and take it to Mission Control Room above Peck’s Office.

Rather than going inside, you can find a vent to the right of the door. Interact with the vent and you’ll administer Truth Serum to Peck below.

Head down to his office, and after doing a little dance, Peck will tell you to head to the Data Center.

Step 4: Capture the Mimics

The Data Center is the building below the satellite dish, so head there and make for the Speed Cola Machine on the top level. On the left of the door beside the machine, there will be a computer with radar on the screen.

speed cola bocw zombies firebase z

When you brush up against the computer, Peck will begin talking and you can unlock the machine. From the machine, you’ll be able to pick up four Essence Traps.

You’ll need to use these Essence Traps to capture Mimics.

Unfortunately, it needs to be specific Mimics. To find them, you’ll need to go around the map until you find a location with several Scorestreaks on the floor. One of the items will be a Mimic in disguise, and you won’t be able to interact with the rest.

Once the Mimic pops out, shoot it until it’s almost dead, throw the Essence Trap on the floor. As it walks over it double-tap interact and it’ll capture the Mimic.

Sometimes the Mimic will escape and if it does, you’ll need to get another Essence Trap from the computer and try again with another one.

bocw zombies firebase z

Once the Mimic is captured, take the Trap back to the computer and listen for one of three characters to talk. We recommend turning on subtitles so you can see if it’s either:

  • Sokolov
  • Brahms
  • Zabim

If it’s not one of these characters, you’ve captured the wrong type of Mimic. Start the next round, then look for the items on the floor again and capture the Mimic that spawns there.

Once you’ve done this three times, a Floppy Disk will pop out of the computer that you need to pick up.

Step 5: Get Aetherium Crystals

After getting the Floppy Disk, take it to the Planning Offices which is the room above where we found the third Serum in Step 2. Insert the Floppy Disk and you’ll be asked to head to the OPC. This is the circular building outside Peck’s Office.

Firebase Z in-game

You’ll find the door is now open, and once you’ve looked at the Aetherium Portal, go and talk to Peck. After a lengthy conversation, you’ll be tasked with finding Aetherium Crystals.

Open the locker on the wall opposite Peck’s Office and you’ll be given an Aethermeter. With this, you need to collect three Aetherium Crystals.

You’ll also need the RAI K-84 and a shovel for this next step.

The shovel can be found in the Scorched Defence outside the building with Peck’s Office. Look in the leftmost hut at the top of the hill and it should be easy to find.

Aetherium Crystal 1 location

With the shovel in hand, head to the Jungle Defence area by the Juggernog Machine, at the right-most Aether Reactor. Go down the hill until you’re almost out of bounds and listen for a beeping noise coming from the ground.

bocw zombies firebase z mangler

When you’re in the right spot, you’ll get a prompt to dig and after doing so, a bubble will form around you. You’ll need to survive inside this bubble for quite a while, battling zombies, Manglers, and Hellhounds.

Once the bubble breaks, you can pick up the Aetherium Canister off the floor.

Aetherium Crystal 2 location

To find the second Aetherium Crystal, you’ll need to head back to the Planning Offices from Step 5. Listen for the beeping on the ground outside again, and dig up the canister once you’ve found it.

After digging it up, lots of Aetherium Canisters will pop up and you’ll need to find the one without black smoke. Almost all of the canisters will have black smoke swirling around inside, so you need to pick up the one with the white smoke. If you get it wrong, you’ll need to try again in the next round.

Just pick up the one with the white smoke and you’ll have the canister in your inventory.

Aetherium Crystal 3 location

You will need to have the RAI K-84 equipped to get the final Aetherium Crystal.

Head to the steps up to the Data Center which is right beside where you created the Truth Serum in Step 3.

RAI K-84 bocw zombies firebase z

After digging up the canister, it will teleport around the Barracks area, moving if you get too close. To pick it up, you’ll need to shoot it with the RAI K’s secondary fire mode. The button defaults to ‘Up’ on the D-Pad or ‘B’ on keyboard, so change the fire mode to the grenade and shoot the canister from a distance.

While the grenade you’ve fired is swirling above the canister, you can pick it up.

Step 6: Activate the portal

Well done for getting this far! We’re almost at the end.

You’ll now need to visit all three of the Aeitherium Reactors you turned on at the start of the game. Deposit a crystal in each, and then visit the OPC again and Peck will destroy the portal.

Go back to Peck and he’ll close the blinds to his office. The characters will all have a chat, and decide that the satellite can be used to reopen the portal. Head to the Planning Offices and interact with the computer by the window.

bocw firebase z mimic

This will open up a mini-game where you need to click on the Satellite marked with a question mark. Some will have an American or Russian flag so only select the one with the question mark.

Head back to the OPC and you’ll now be ready to start the boss fight.

Step 7: Defeat Orda

After interacting with the control panel on the right-hand side of the OPC room, you’ll be teleported back to the starting village. Here, you’ll have to fight Orda, an Elder God.

Keep shooting him while being mindful of the zombies on the ground attacking you, and you shouldn’t have too much trouble taking him down.


Once he’s defeated, congratulations! You’ve finished the Black Ops Cold War Firebase Z Easter Egg.

This will show the final cutscene for Firebase Z, and you’ll also unlock a Calling Card to show off.

Image Credit: Activision

Call of Duty: Black Ops Cold War

Warzone & Cold War Season 6 cinematic teases Mason’s return

Warzone and Black Ops Cold War have a new Season 5 outro cinematic hinting at Mason’s importance in the story for Season 6 of the Call of Duty games.

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Woods and Hudson talking

The latest cinematic for Black Ops Cold War and Warzone Season 5 has been released, and players are excited about the reference towards Mason returning.

Black Ops Cold War and Warzone have had a successful season so far, keeping players entertained with the ongoing story, new weapons, and new modes like the Iron Trials for Warzone Season 5 Reloaded.

As we enter the final season for Black Ops Cold War before Vanguard‘s release, which will inevitably integrate with Warzone, players have been given a hint towards Mason’s return in a brand new cinematic.

Woods and Mason meeting in an alleyway to discuss Adler going Rogue

Treyarch released a new Season 5 outro cinematic on their YouTube channel on September 23, carrying on the ongoing story that has spanned the last five seasons.

For those still keeping up to date with the details, this outro cinematic plays a pivotal role in setting up the final season for Black Ops Cold War.

Black Ops Cold War will enter its final season soon, and players are desperate to find out who the last operator will be. It seems the last operator could be a fan-favorite character from the Black Ops series, Mason.

Although the cinematic is only a minute long, players can gain some critical information from it. Hudson and Woods are having a conversation about Adler’s disappearance, discussing what they should do next.

Ultimately, they decide that Woods should go after Adler, who is in Verdansk, while also mentioning the return of Mason, whose experience with the numbers could give them the edge.

You can find the official description of the new Warzone and Black Ops Cold War cinematic below:

“The news is flooding in: more Operators have abandoned their missions. Mounting evidence suggests that Adler has gone rogue. Disturbed, Hudson sends Woods to find Adler and bring him in… along with the one person whose Numbers Program intel could provide the edge they need.

The showdown begins in Season Six.”

We’ll have to wait for Season 6 to see where the story will go, but it’s set up to be an exciting end to what’s been a great seasonal story.

Image Credits: Activision / Treyarch / Raven Software

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Call of Duty: Black Ops Cold War

New Cold War Sai weapon exploit lets Zombies players skip doors

Black Ops Cold War players have discovered an exploit with the Sai melee weapon that lets them skip doors in Zombies mode.

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Kitsune Operator using the Sai in Black Ops Cold war zombies mode

A new exploit has been discovered with Black Ops Cold War’s new Sai melee weapon which lets players skip through the first door in the Firebase Z map in Zombies.

Black Ops Cold War Zombies received some new content in the Season 5 Reloaded update, including a new Black Chest World Event in Outbreak, a Rampage Inducer for round-based maps, and a brand-new weapon.

A new melee weapon called the Sai became available for players as part of The Numbers event. Now, players have discovered that this weapon actually lets them skip through doors in Zombies mode.

Sai in Black Ops Cold war

Various players reported being able to go through the first door at Firebase Z while they had the Sai equipped. This led to a response from lead developer Mark Maestas, who was well aware of the situation.

Surprisingly, the developer talked about this exploit with enthusiasm. “Dear Zombies players, yes you can skip the first door in Firebase Z,” tweeted Maestas. “Zombies can come and greet you too. GLHF!”

While these kinds of things are often addressed in update patches, Mark’s response makes it seem like the developers aren’t currently planning on doing anything to fix this exploit.

With this exploit, players will be able to access greater levels of Zombies much quicker than before, and the undead will be able to come to them as well.

It’s possible that the developers are going to avoid fixing this one exploit so that they can focus on fixing the Zombies’ pathfinding instead, ensuring that the exploit doesn’t ruin the game.


For more on Black Ops Cold War, stay tuned to Charlie INTEL, and check out our guide on the new Hardcore Cold War Outbreaks Zombie mode.

Image credits: Treyarch

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Call of Duty: Black Ops Cold War

When is the next Cold War & Warzone Double XP event?

We have the dates and times for the next CoD: Cold War and Warzone Season 5 Double XP event to help you rank up weapons and Battle Passes.

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cod bocw warzone double xp

With so many Prestige levels, different weapon levels, and Battle Pass levels in Cold War and Warzone in Season 5, it’s only natural to want more XP. Here’s when the next CoD Double XP event is going to be.

XP has been a vital component of Call of Duty’s multiplayer for many years. It’s the quintessential upgrade mechanic that allows you to increase your in-game level and provide you access to better gear and attachments.

Black Ops Cold War and Warzone Season 5 has already offered Double XP since it started, allowing players to level up the various aspects of the game faster. It’s now time for another one where players will be able to level up all of the new content at a much faster pace.

How to get Double XP in CoD: Cold War & Warzone Season 5

playing using grappling hook in cold war zombies

It’s been announced that Call of Duty’s next Double Weapon XP promotional event will be for Warzone and Black Ops Cold War and will officially start on September 24 and conclude on September 27.

This event will help players earn plenty of extra XP to level up during Season 5 of the popular Call of Duty games.

What time does CoD: Cold War & Warzone Double XP start?

Here’s a full list of the Double XP event’s start time & dates in some of the key timezones:

  • EST – 1:00 PM
  • CST – 12:00 PM
  • PST – 10:00 AM
  • GMT – 5:00 PM

These special Double XP Events usually occur during a weekend, as it naturally gives players the most free time as it’s away from school hours and generally when people are off work.

This will be a great way to level up the new Season 5 Battle Pass to earn the new TEC-9 SMG and EM2 Assault Rifle weapons and get them ready to use in all of your future Cold War and Warzone battles.

Also, check out all the details on Call of Duty: Vanguard, including its release date, gameplay, and more.

Image Credit: Activision / Treyarch / Raven Software

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