Call of Duty: Black Ops 7 – Unlock the LGM-1 on Astra Malorum Step-by-step guide to obtaining the retrofuturistic Wonder Weapon in Black Ops 7 Zombies

🪐 Overview of Astra Malorum and the LGM-1

The second Zombies map for Call of Duty: Black Ops 7, Astra Malorum, kicks off Season 1 with a visually striking Liberty Falls observatory floating above Saturn. As always, this map features a new Wonder Weapon and an exciting Easter Egg for players to solve.

The highlight? The LGM-1, a retrofuturistic weapon containing a “Little Green Menace” that sends UFOs crashing into zombies whenever you fire. Here’s how to get your hands on it.

🔧 Gather the Required Parts

Before you can unlock the LGM-1, you need to collect four key items across the map. Collect these early to avoid waiting for O.S.C.A.R. to respawn during later steps.

Absolute Zero Fragments: Shoot three Aether Crystals with Cryo Freeze ammo to obtain all fragments.
Aberrant Wiring: Find a flickering lamppost and shoot it. Note that the lamppost location is random each game.
Car Battery: Return to the Crash Site with a Pack-a-Punched weapon, shoot the gearstick inside Ol’ Tessie, and collect the Car Battery from the exposed hood.
Crashed UFO Part: Destroy a drone circling O.S.C.A.R. to acquire this part.

🤖 Defeat O.S.C.A.R. in the Luminarium

Once your parts are ready, it’s time to take down O.S.C.A.R. Follow this optimal sequence:

Lure O.S.C.A.R. to the Luminarium using Jugger-Nog.
Enter the lecture hall to the northwest and interact with the Stellar Dissector to place the Car Battery.
Wait for the trap to expire; O.S.C.A.R. will dissipate, leaving a Shiny Trinket behind.

The Shiny Trinket occupies your Tactical slot but is essential for later steps.

🏛️ Defeat O.S.C.A.R. in the Museum Infinitum

After 2–3 rounds, O.S.C.A.R. will respawn. Bring him to the Museum Infinitum near Speed Cola:

Interact with the rocket’s panel to trigger a launch sequence.
Use the Shiny Trinket to lure O.S.C.A.R. behind the rocket.
Once he disappears again, you’re ready for the next step.

🔥 Shoot the Steaming Valves

While waiting for O.S.C.A.R.’s next respawn, locate the steaming valves in the Observatory Dome:

Two below Pack-a-Punch
Two above the piano on the upper balcony
One above the console to the west
One on the southwestern pillar
One on the southeast wall
One in the northeast corner
One in the portal room

Shoot a valve to start a timed sequence, then find and shoot the next valve until the telescope in the center of the dome moves. Failing this requires waiting another round for the valves to reset.

🔭 Final O.S.C.A.R. Battle in the Observatory Dome

Once O.S.C.A.R. respawns:

Bring him to the Observatory Dome and interact with the piano opposite Pack-a-Punch.
Look through the telescope and center your crosshair on the sun.
A yellow laser will fire, and you can safely lure O.S.C.A.R. into it.

Defeat him this way, and he will drop the LGM-1.

✨ Final Thoughts

The LGM-1 is a perfect addition to the Black Ops 7 arsenal, combining classic Wonder Weapon nostalgia with a fresh, UFO-fueled twist. By following this guide, you can efficiently gather all parts, manipulate O.S.C.A.R., and claim your reward without wasting rounds.