Black Ops 7 Zombies Astra Malorum Main Easter Egg (June 2026 Guide)

The Black Ops 7 Zombies Astra Malorum main Easter egg is the most complex interstellar quest in Call of Duty history, taking players from a mysterious observatory drifting within Saturn’s rings to the surface of Mars in a multi-phase adventure. This comprehensive guide breaks down every step, from acquiring the LGM-1 Wonder Weapon to defeating the final boss Caltheris, with detailed strategies for both solo and co-op players.

Quick Overview: Astra Malorum Main Easter Egg Steps

Step	Objective	Location	Key Items
1	Power & Pack-A-Punch	Observatory Dome	Harmonic Components
2	Get LGM-1 Wonder Weapon	Multiple Areas	4 Components + 3 Traps
3	Solve Planet Puzzle	Observatory Dome	3 Planet Names
4	Get Thurston’s Brain	Machina Astralis	Cryo Key, Rock Saw
5	Book Puzzle	Archive of Orbis	5 Book Titles
6	Planet Alignment	Machina Astralis	3 Direction Papers
7	Mars Portal Defense	Mars	Brain Canister
8	Symbol Matching	Mars	4 Symbols
9	Boss Fight	Mars	Caltheris

Step 1: Power Up and Activate Pack-A-Punch

The first step in your Astra Malorum journey is straightforward but essential. You’ll need to activate the power and unlock the Pack-A-Punch machine to progress through the Easter egg.

Gathering Harmonic Components

Before you can access Pack-A-Punch, you must collect three Harmonic Component items scattered across the map:

• Luminarium Component: Located in the lecture hall area of The Luminarium
• Machina Astralis Component: Found in the planetary display room
• Observatory Component: Situated near the piano area in the Observatory Dome

Activating the System

Once you have all three components, head to the Observatory Dome and interact with the Harmonic Oculus (the piano). This will trigger a 60-second lockdown sequence where you must defend the area from incoming zombies. Survive the onslaught, and once complete, you’ll have access to both the power system and the Pack-A-Punch machine.

Pro Tip: During the lockdown, focus on survival rather than killing every zombie. Use the environment to your advantage and prioritize staying alive over getting kills.

Step 2: Acquire the LGM-1 Wonder Weapon

The LGM-1 (Little Green Menace) is Astra Malorum’s signature Wonder Weapon, launching autonomous saucer squadrons that swarm enemies with devastating laser fire. Here’s how to obtain it:

Collect the Four Essential Components

You’ll need to gather four specific items before you can begin trapping O.S.C.A.R.:

1. Absolute Zero Fragments

• Requirement: Purchase the Cryo Freeze Ammo Mod from any Arsenal machine
• Method: Shoot three purple Dark Aether Crystals scattered around the map
• Locations: Typically found outside the Museum Infinitum and near the Observatory Dome
• Result: Collect three Absolute Zero Fragments that drop from each crystal

2. Aberrant Wiring

• Method: Locate and shoot the flickering lamppost on the map
• Important: The lamppost location is randomized each game, but it’s visually distinct from other lights
• Weapon Requirement: Must use a Pack-A-Punched weapon
• Result: Aberrant Wiring item drops from the lamppost

3. Car Battery

• Location: Find Ol’ Tessie (the vehicle) at the Crash Site
• Method: Shoot the gearshift inside Ol’ Tessie with a Pack-A-Punched weapon
• Result: Car Battery drops from the exposed hood

4. Crashed UFO Part

• Method: Wait for O.S.C.A.R. to spawn (typically around round 5-7)
• Action: Destroy one of the UFO projectiles circling O.S.C.A.R.
• Result: Crashed UFO Part drops from the destroyed projectile

Trap O.S.C.A.R. Three Times

With all components collected, you’ll need to defeat O.S.C.A.R. using three different traps across the map. This must be done in sequence, with O.S.C.A.R. respawning between each defeat.

Trap 1: Electro-Volt Projector (Luminarium)

1. Head to the Luminarium and locate the Electro-Volt Projector
2. Install all three components: Car Battery, Aberrant Wiring, and Crashed UFO Part
3. Activate the trap and lure O.S.C.A.R. into the beam
4. Survive the lockdown while the trap overcharges O.S.C.A.R.’s systems
5. Collect the Shiny Trinket that drops when O.S.C.A.R. is defeated

Trap 2: Rocket Ignition (Museum Infinitum)

1. Wait 2-3 rounds for O.S.C.A.R. to respawn
2. Head to the Museum Infinitum and find the rocket display
3. Install the three Absolute Zero Fragments into the rocket
4. Activate the ignition sequence and lure O.S.C.A.R. into the rocket’s exhaust beams
5. Time it so O.S.C.A.R. is in the beam when the countdown reaches zero
6. Collect another Shiny Trinket upon defeat

Trap 3: Planetary Telescope (Observatory Dome)

While waiting for O.S.C.A.R. to respawn again, complete this setup:

1. Shoot the Steam Valves: Find and shoot steaming valves in sequence
   • 2 valves below Pack-A-Punch
   • 2 valves above the piano on the upper balcony
   • 1 valve above the console to the west
   • 1 valve on the southwestern pillar
   • 1 valve on the southeast wall
   • 1 valve in the northeast corner
   • 1 valve in the portal room
2. Activate the Telescope: Once all valves are shot correctly, the telescope will move
3. Use the Harmonic Oculus: Interact with the piano and look through the telescope viewfinder
4. Target the Sun: Center your crosshair on the sun to activate a powerful laser beam
5. Defeat O.S.C.A.R.: Lure him into the laser beam to defeat him for the third time
6. Claim Your Reward: O.S.C.A.R. will drop the LGM-1 Wonder Weapon

Expert Strategy: The steam valve sequence is timed and resets if you fail. Listen for audio cues and move quickly between valves. Mark valve locations on your map for future reference.

Step 3: Solve Thurston’s Planets Puzzle

With the LGM-1 in hand, it’s time to tackle the next major puzzle involving Dr. Thurston and planetary coordinates.

Follow O.S.C.A.R. Stealthily

1. Spawn O.S.C.A.R.: Wait for the next round if he’s not currently active
2. Stealth Mode: Follow O.S.C.A.R. closely but remain undetected
3. Listen Carefully: Eventually, O.S.C.A.R. will play audio logs from Dr. Thurston
4. Note the Planets: Thurston will mention three specific planet names
5. Enable Subtitles: Turn on subtitles in settings to ensure you don’t miss any names

Convert Planets to Code

Each planet corresponds to a number based on its distance from the sun:

Planet	Number
Mercury	1
Venus	2
Earth	3
Mars	4
Jupiter	5
Saturn	6
Uranus	7
Neptune	8

Example: If Thurston mentions “Venus, Earth, Saturn,” your code would be 236.

Enter the Code

1. Location: Find the code machine on the northwest pillar in the Observatory Dome (near Pack-A-Punch)
2. Input: Enter your three-digit code in the order the planets were mentioned
3. Success: A platform will lower, revealing a corpse above
4. Reward: Interact with the corpse to obtain the Cryo Chamber Key

Common Mistake: Players often enter the planets in numerical order rather than the order Thurston mentions them. Pay close attention to the sequence!

Step 4: Acquire Dr. Thurston’s Brain

This step involves some rather gruesome but necessary work to progress the Easter egg.

Get the Rock Saw

1. Location: Museum Infinitum
2. Method: Destroy the display case in the southwest corner
3. Result: Rock Saw item can be collected

Locate the Cryo Pod

1. Destination: Machina Astralis room (the planetary display area)
2. Find the Pod: Look in the southern corner for a cryo pod
3. Use the Key: Interact with the pod using the Cryo Chamber Key
4. Reveal the Body: The pod will open, revealing Dr. Thurston’s frozen corpse

Extract the Brain

1. Use the Rock Saw: Interact with the corpse using the Rock Saw
2. Graphic Content: You’ll extract Dr. Thurston’s brain (yes, really)
3. Pick Up the Brain: Collect the brain item

Set Up the Brain Canister

1. Location: The Luminarium
2. Find the Canister: Look for a brain container in the east wall area
3. Swap Brains: Interact with the canister twice to replace the existing brain with Thurston’s
4. Defend the Canister: This triggers a 60-second lockdown where you must protect the brain canister from zombies
5. Survive: Defend the area until the lockdown ends
6. Collect: Pick up the brain canister after the defense is complete

Install the Brain

1. Destination: Machina Astralis
2. Find the Machine: Locate the rusted Perfusion Machine on the west wall
3. Install: Place the brain canister into the machine
4. Connect: Interact to connect the brain to the network

Pro Tip: During the brain defense phase, use area-effect weapons and perks like Jugger-Nog to survive the intensified zombie spawns.

Step 5: Solve the Books and Statues Puzzle

The brain will now provide you with information needed to solve the next complex puzzle.

Note the Book Titles

1. Monitor Display: Look at the monitor to the left of the Perfusion Machine
2. Memorize Titles: Five book titles will appear on screen
3. Write Them Down: These titles are crucial for the next step

Example Titles: “Ash and Bones,” “The Unknowable Void,” “The Black Veil,” “Silence At Singularity,” “The Moon Directive”

Locate the Books in Archive of Orbis

1. Destination: Archive of Orbis
2. Search Shelves: Interact with bookshelves to locate the five titles from your list
3. Count Books per Wall: Note how many of your target books are on each wall

Solve the Statue Puzzle

1. Find the Busts: Each wall has a bust statue at the end
2. Interact Correctly: Press the interact button once for each book on that wall
   • 1 book = 1 interaction
   • 2 books = 2 interactions
   • And so on…
3. Listen for Audio: A voice line will confirm success
4. Timed Element: This step is timed, so plan your interactions before starting

Example: If “Ash and Bones” and “The Unknowable Void” are on the same wall, interact with that bust twice.

Claim the Planet Neptune

1. Find the Trapdoor: A trapdoor will open in the west wall
2. Climb the Ladder: Go up to access the newly revealed area
3. Collect: Interact with the object to obtain the Planet Neptune item

Expert Strategy: Before starting the statue interactions, quickly count how many books are on each wall and plan your route. This minimizes time spent running around during the timed sequence.

Step 6: Align the Planets in Machina Astralis

With the Planet Neptune in hand, it’s time to solve the planetary alignment puzzle.

Install Planet Neptune

1. Location: Machina Astralis upper level
2. Find the Planetarium: Look for the planetary display with an empty slot
3. Install: Place the Planet Neptune in the empty slot
4. Orientation: The slot is typically found when facing the sun from the southeast

Find the Direction Papers

Locate three pieces of paper that provide planetary alignment directions:

Paper #	Location	Position
1	Machina Astralis main room	On a desk when facing south
2	Archive of Orbis	On a desk with notes and books in the center
3	The Luminarium	On a coffee table when facing northwest

Each paper shows a planet name and a compass direction (NW, NE, SW, SE, etc.).

Align the Planets

1. Return to Machina Astralis: Go back to the planetary display
2. Reference the Sun: Stand under the sun and use the compass directions below it
3. Shoot Planets: Shoot each planet in the direction specified on your papers
4. Visual Confirmation: The planets will move when correctly aligned

Trigger the Portal Lockdown

1. Interact with Brain: Once all planets are aligned, interact with the brain station
2. Defend the Portal: A 2-minute lockdown begins where you must defend a charging portal
3. Shoot Down Drones: O.S.C.A.R. will shoot drones at the portal – destroy them before impact
4. Survive: Protect yourself from zombies while defending the portal
5. Transport: When complete, you’ll be automatically teleported to Mars

Critical Tip: During the portal defense, prioritize shooting O.S.C.A.R.’s drones over killing zombies. The drones can quickly fail the step if they reach the portal.

Step 7: Activate the Pylons and Grab the Ascendant Eye on Mars

Welcome to Mars! The red planet holds the next crucial steps in your Easter egg journey.

Initial Setup on Mars

1. Pick Up the Canister: The brain canister will be on the ground in the central area
2. Place the Canister: Take it to the machine near where you spawned and install it
3. Listen for Dialogue: Thurston will provide instructions about the next steps

Locate and Shoot the Pylons

1. Find the Window: Go to the back of the area and look through a window
2. Spot Four Poles: You’ll see four pylons emitting ethereal chimes
3. Shoot in Order: Back right → Back left → Front right → Front left
4. Watch the Movement: A flying object (the Ascendant Eye) will move to each pylon as you shoot

Capture the Ascendant Eye

1. Shoot the Obelisk: Target the metallic obelisk above the spawn portal
2. Keep Shooting: Continue shooting to keep the Ascendant Eye in the area
3. Wait for Low Gravity: Anti-gravity will activate, making the object descend
4. Jump and Grab: When the object is low enough, jump up and collect it
5. Install the Eye: Place the Ascendant Eye in the golden pillar in the southeast corner

Return to Astra Malorum

1. Head Back: Return to the Observatory Dome in Astra Malorum
2. Find the Device: Look for a device to the right of the piano
3. Note the Symbols: The device will display four distinct symbols in a specific order
4. Remember the Order: One symbol will be missing from the visual sequence but present in the audio

Pro Tip: Take a screenshot of the symbols or write them down exactly as they appear. The order is crucial for the next step.

Step 8: Complete the Mars Pillar Puzzle

This is one of the most complex and time-sensitive steps in the Easter egg.

Return to Mars with the LGM-1

1. Gear Up: Ensure you have the LGM-1 Wonder Weapon ready
2. Ammo Check: Make sure you have plenty of ammunition
3. Perk Up: Have essential perks like Jugger-Nog and Speed Cola active

Locate and Shoot the Pillars

1. Find the Five Pillars: Look for pillars with symbols on their surfaces around Mars
2. Shoot with LGM-1: Use the LGM-1 to shoot the top of each pillar
3. Activation: The pillars will activate and prepare for the final sequence

Match the Symbols

1. Quick Interaction: You must interact with the pillars in the exact order shown earlier
2. Timed Challenge: This step is timed – if you’re too slow, it resets
3. Include the Missing Symbol: Remember the symbol that was in the sequence but not visually shown
4. Visual Confirmation: Each pillar will glow blue when correctly activated
5. Complete the Sequence: When all pillars glow blue, the step is complete

Summon the Boss

1. Final Interaction: Interact with the brain canister one last time
2. Boss Spawn: This will trigger the final boss fight with Caltheris
3. Prepare for Battle: Make sure you’re fully equipped before starting

Expert Strategy: Before starting the pillar interactions, memorize the symbol order and plan your route between pillars. The LGM-1’s rapid fire makes it ideal for quickly shooting all pillars.

Step 9: Defeat Caltheris – The Final Boss Fight

Caltheris is a four-phase boss fight that tests all your Zombies skills. Here’s how to defeat each phase:

Phase 1: Sky Caltheris

1. Boss Position: Caltheris appears as a giant floating skull in the sky
2. Weapon Ineffectiveness: Your guns cannot damage Caltheris directly in this phase
3. Kill Zombies: Focus on killing zombies to fill generators with souls
4. Activate Lasers: Once generators are filled, interact with the brain at the altar to activate firing sequences
5. Three Activations: You need to complete this process three times
   • First two times: Activate single lasers
   • Third time: Activate both lasers simultaneously
6. Avoid Attacks: Dodge Caltheris’s laser attacks while filling generators

Phase 2: Rock Monster Caltheris

1. New Form: Caltheris transforms into a rock monster that chases you
2. Movement Strategy: Run and slide to maintain distance
3. Weak Point: Focus on the glowing blue weak spots
4. Armor First: Attack the armor field before you can damage the actual boss
5. Pattern Learning: Learn Caltheris’s attack patterns and time your dodges

Phase 3: Caltheris Ascendant

1. Enhanced Form: The boss becomes larger and more powerful
2. New Attacks: Caltheris now throws rocks at you
3. Same Strategy: Continue targeting blue weak spots
4. Increased Mobility: Be prepared for faster movement and more aggressive attacks

Phase 4: Caltheris the Needle

1. Final Form: Giant rock monster with enhanced abilities
2. Rock Attacks: Throws giant rocks that can stun you
3. Gas Clouds: Produces damaging gas clouds – avoid these areas
4. Break Armor: Focus on breaking the armor field first
5. Target Weak Spots: Attack glowing blue areas while maintaining distance
6. Victory: Once defeated, the cutscene will play and you’ll complete the Easter egg

Boss Fight Strategy:

• Use Gobblegums like Perkaholic and Extra Credit Points
• Keep the LGM-1 for its crowd control capabilities
• Use Pack-A-Punched weapons for maximum damage
• Coordinate with teammates in co-op to divide responsibilities

Pro Tips and Advanced Strategies

Solo Play Considerations

1. Perk Priority: Focus on Jugger-Nog, Quick Revive, Speed Cola, and Double Tap
2. Weapon Setup: LGM-1 plus a strong Pack-A-Punched weapon like the Maddox RFB
3. Resource Management: Conserve ammo and use the environment effectively
4. Patience: Some steps require waiting for rounds to progress – don’t rush

Co-op Optimization

1. Role Division: Assign specific roles to each player (e.g., one person handles symbols, another defends)
2. Communication: Use voice chat to coordinate complex steps
3. Revive Strategy: Establish revive priorities and positions
4. Resource Sharing: Share points, weapons, and perks strategically

General Expert Tips

1. Map Knowledge: Learn the layout of each area before attempting the Easter egg
2. Symbol Recognition: Take screenshots or photos of complex symbol sequences
3. Backup Saves: If possible, create backup saves at major checkpoints
4. Community Resources: Join Discord communities for real-time help
5. Practice: Run through individual steps separately before attempting the full Easter egg

Common Mistakes to Avoid

1. Rushing Steps: Take time to understand each step before proceeding
2. Missing Audio Cues: Keep subtitles on and volume up for important dialogue
3. Incorrect Symbol Order: Double-check symbol sequences before interacting
4. Poor Resource Management: Don’t waste ammo or points on unnecessary purchases
5. Ignoring Zombie Threats: While focusing on puzzles, don’t let zombies overwhelm you

Community Resources and Official Links

Official Resources

• Call of Duty Official Website: callofduty.com/blackops7
• Official Twitter: @CallofDuty for updates and announcements
• Treyarch Twitter: @Treyarch for developer insights
• Official Discord: Call of Duty Discord for community discussions

Frequently Asked Questions

How long does the Astra Malorum Easter egg take to complete?

The Easter egg typically takes 2-4 hours for experienced players and 4-6 hours for newcomers, depending on team size and skill level.

Can the Astra Malorum Easter egg be completed solo?

Yes, the Easter egg can be completed solo, but it’s significantly more challenging. Co-op is recommended for first-time attempts.

What happens if I fail a step?

Most steps can be retried in the next round, but some may require restarting the entire Easter egg. Always have backup plans.

What are the rewards for completing the Easter egg?

Players receive exclusive calling cards, camos, and the satisfaction of completing one of Zombies’ most complex quests.

Is the LGM-1 Wonder Weapon necessary for the Easter egg?

Yes, the LGM-1 is required for several key steps, particularly the Mars pillar puzzle.

Can I attempt the Easter egg multiple times?

Yes, you can attempt the Easter egg as many times as you want. Each attempt is independent of previous ones.

What’s the minimum round requirement?

While you can start earlier, it’s recommended to reach at least round 10-15 before attempting the Easter egg for better equipment and perks.

Conclusion

The Black Ops 7 Zombies Astra Malorum main Easter egg is a masterpiece of game design, combining intricate puzzles, challenging combat, and a compelling narrative that spans from Saturn’s rings to the surface of Mars. This guide has provided you with everything needed to conquer this complex quest, from acquiring the LGM-1 Wonder Weapon to defeating the multi-phase boss Caltheris.

Remember that practice makes perfect – don’t be discouraged if you don’t complete it on your first attempt. Join the community, learn from others, and most importantly, have fun exploring the mysteries of Astra Malorum. The universe of Black Ops 7 Zombies awaits your discovery, and with this guide as your companion, you’re well-equipped to tackle whatever challenges lie ahead.

Good luck, and may your journey through the stars be successful!