To unlock the D.I.E. Cyro-Emitter Wonder Wonder you will need to head to the Penthouse, which can be found at the top of the Nacht Der Untoten building.
At the top, look over the edge of the building near the green tarp and you will find a box just towards the left. Shoot this box and pick up the Flask that is dropped to the Pond area below. Once you have collected the Flask, look for the nearby tree that is covered in fungus.
You will need to lure a Megaton zombie to this area and have it blast the fungus covered tree with its radio-active attack. Having done so, interact with the fungus and place the flask beneath it.
Once the flask has been filled, pick it up and make your way to the Medical Bay in the Facility.Upon arriving in the Medical Bay, you will find a a small boxed covered in chains, not too far from the Particle Accelerator door.
Using your flask, interact with the box and have the flask remove the chains. When opening the box, you will be rewarded with the D.I.E. Cryo-Emitter.
To unlock the D.I.E. Nova 5 Wonder Weapon, make your way to the Mezzanine room which can be found on the top floor of the Nacht Der Untoten building. Once you reach the top, you will find a small golden canister sitting on a table inside a small room towards the end of the building.
Unable to reach the canister by foot, use the D.I.E. Wonder Weapon’s suction ability to pull the canister towards you. Now that you have the canister, head to the Weapons Lab in the Facility and insert it into the into white machine that can be found just right of the large blueprint that’s hanging on the wall.Upon inserting the canister, kill the Plaguehound that spawns near the machine. With the canister now infected, pick it up and head towards the Crash Site.Near the crashed planed, you will find a small box – interact with it and then melee it. You will now be able to pick up the D.I.E Nova 5 from the box.
Once you have obtained the D.I.E Shockwave, make your way back to the Dark Aether Portal that can be found on the ground floor of the Particle Accelerator room, just under the Pack-A-Punch machine.
Upon entering the Dark Aether, you will be required to collect a total of three energy crystals. These crystals can be found in the following locations and can be collected in any order.
- Crash Site:
- You will find the energy crystal on the ground near the entrance to the Tunnel, not too far from the Perk Machine.
- Nacht Der Untoten:
- You will find this energy crystal on the roof of the Nacht Der Untoten, just above the Stamina-Up Machine.
- The final energy crystal can be found near the mystery box, not too far from the path that leads to the Facility Tunnel.
It’s important to note that you can only collect one crystal at a time, meaning that you will need to make three separate trips for the crystals.
After picking up each crystal, return to the Particle Accelerator room and shoot the crystal into the box that can be found on the first floor of the room. Upon repeating this step for the third crystal, you will receive the D.I.E. Electrobolt variant of the Wonder Weapon.
To obtain the Thermophasic Wonder Weapon, head to the Pond and enter through the Dark Aether portal.
Upon reaching the Dark Aether, make your way to the Crash Site, where you will find a small box beneath the floating plane.
Based on a time limit, you will need to complete the following steps as quickly as possible.
Return to the normal world and make your way back to the Pond. Here, look for the old truck and you will find the D.I.E. Thermophasic weapon when interacting with the green box that can be found sitting on the truck’s bed.