Call of Duty: Black Ops 7 Zombies gets a new map with Season 3 Reloaded, which takes players to Totenreich, a frozen fishing town located in the Dark Aether. With a new map comes a powerful Wonder Weapon, one that players can unlock by completing a short mission. Here is how to get Jotunn Star Wonder Weapon in Totenreich.

How to easily kill Necropincer in Totenreich (Black Ops 7 Zombies)
Totenreich has the Necropincer, a brand new special enemy that has its own unique elemental weakness. Here's What Ammo Mod To Use!
Step #1: Lower the crane to grab the chain links at the dry dock
For the first step, you need to get the chain links. To do that, head to the Dry Docks and then to the Titan Crane. In the room under the Titan Crane you can find a button to lower it. Interact with this particular button.
From here, just stand on the broken railing past the button and wait for the crane to fall. Then, wall-jump from the wall hooked on the crane and look towards the tip of the ship to the right and press the interact button. If you do, you can get the chain links.
Step #2: Create Varkrith and defeat it to get the lantern
For the next step, you must spawn in Varkrith, who carries the second piece of the Wonder Weapon. To do this, first go to the Storm Bridge and find a box filled with cans of Chili Chunksfound behind the truck in the middle of the bridge. Interact with it to pick one up.
From here, go to the Skull Market. At the far south side you will find a stand with the same cans. Interact with it to place the chili pieces on the table.
Now you will need wait at Skallen Market for a special roundwhich usually occurs every fifth round, starting as early as round 5. Once a special round begins, Varkrith, a Zursa HVT, will be spawned. Defeat this Zursa during the special round to make him drop the lantern for the Jotunn star.

Paradox Junction Easter Egg Walkthrough in Black Ops 7 Zombies
Here's a complete guide to Paradox Junction's main easter egg mission in Black Ops 7 Zombies, complete with all the steps, locations and tips.
Step #3: Open the Graveyard and complete the Constellation Puzzle to summon Astrid
For the next step, go to the Burial Grounds buildinglocated northeast of Skallen Marknad. Once there, keep interacting on the left side of the door to repair it. Note that this will lock you into a crafting animation, which you can cancel at any time, so make sure there are no zombies nearby before starting.
After you repair the door, it will open. From here, go down into the burial grounds and interact with the stone altar to place the lantern. Doing so will cause a series of constellations to be projected onto the walls.
You must now note which constellations appear on the altar, then interact with the same constellations on the walls in the following order as shown on the altar: left, right, back and front (the side facing the stairs).
If you interact with the wrong constellation, or do so in the wrong order, the constellations will disappear, meaning you must interact with the lantern again to restart the process.
If you match all the constellations in the correct order, Astrid will spawn. Listen to her dialogue and then proceed to the next step.
Step #4: Charge Astrid with Frost Zombie Souls & reach the lighthouse to get the Jotunn star
For the fourth step, you must follow Astrid to two important places: Skallen's market and Eidskallen's square. In every place you have to energize Astrid with Frost Zombie soulswhich will be born continuously. Eliminate enough Frost Zombies near Astrid to complete this part of the stage.
Once this is done, a row of pillars will appear in Eidskallen square, leading up to the lighthouse. Your goal here is to complete this mini parkour course and reach the ladder just below the top of the lighthouse. When you reach the ladder, interact with it to enter the lighthouse.
Inside, Astrid will create the Jotunnstar for youso you can pick up the Wonder Weapon and use it yourself. From here you can upgrade the Wonder Weapon with the Pack-a-Punch Machine to make it even stronger.