Step 1
Power & Pack-A-Punch
Turn on the Power and activate Pack-A-Punch.
Step 2
Build the Aetherscope
The Aetherscope has 3 parts that spawn one at a time in the Dark Aether. Use a portal to enter the Dark Aether and collect each part:
- Yard
- Crash Site
- Particle Accelerator
After picking up each part, it will spawn some Plague Hounds.
Once you have all 3 parts, craft the Aetherscope at the Build Table in the Particle Accelerator.
Step 3
Diary & the 3 Anomalies
Use the portal in the Medical Bay to be transported to the Dark Aether.
Grab the Diary next to the Computer in Medical Bay.
Take the Diary to 3 anomalies around the map, in order:
- Medical Bay
- Control Room
- Particle Accelerator
After listening to all 3 anomalies, interact with the computer in Medical Bay to enter the password.
Note
You'll need to build all 4 elemental variants of the D.I.E. for the next step — see below.
Build
D.I.E. Shockwave
Kill a Megaton and pick up the Keycard it drops.
Use the Keycard on the Weapon Locker in the Weapons Lab to reveal a D.I.E. Remote — pick it up.
There's a closed door in the Living Room with a hole in the wall. Use the D.I.E. Remote to interact with the D.I.E. Shockwave through the hole, using it as a trap.
Get kills using this trap until it's fully charged, then interact with the D.I.E. Shockwave to blast open the door.
Pick up the D.I.E. Shockwave from inside.
Build
The 4 D.I.E. Elemental Variants
All 4 variants require the D.I.E. Shockwave obtained above. They can be built in any order.
Shoot down a Flask on the Penthouse using the D.I.E. Shockwave and pick it up.
Get a Megaton to hit the tree located between the Crash Site and the Pond with its radioactive ball attack, making a liquid come out of the tree.
Place the Flask under the tree to collect the liquid, then pick it back up once it's full.
Use the Filled Flask on the chained box in the Medical Bay to open it.
You can now switch your D.I.E. Shockwave's element to Cryo-Emitter using this box.
Unlock the Computer using the password from Step 3 of the Main Quest.
Use the portal in the Particle Accelerator to enter the Dark Aether.
3 Crystals will be glowing around the map. Absorb each with the D.I.E. Shockwave and shoot it into the chained box in the Particle Accelerator, one by one:
- Pond
- Penthouse
- Crash Site
After all 3 Crystals are absorbed and shot into the box, you can now switch your D.I.E. Shockwave's element to Electrobolt using this box.
Absorb the Canister on the second floor of the Bunker Ruins using the D.I.E. Shockwave to pick it up.
Place the Canister in the Weapons Lab near Deadshot Daiquiri and kill a Plague Hound next to it to fill it.
Pick up the filled Canister and place it on the chained box at the Crash Site, then shoot it to open the box.
You can now switch your D.I.E. Shockwave's element to Nova-5 using this box.
Unlock the Computer using the password from Step 3 of the Main Quest.
Use the portal between the Crash Site and the Pond to enter the Dark Aether.
Shoot open a box and pick up the fuse under a floating plane part in the Crash Site.
Place the fuse in the laser cutter in the Weapons Lab.
The chained box in the back of a truck near the Pond will now be open.
You can now switch your D.I.E. Shockwave's element to Thermoplastic using this box.
Step 4
The Container's 4 Legs
The container in the ceiling of the Medical Bay has 4 legs, each a different color corresponding to one of the D.I.E. elemental variants.
Use the matching elemental variant of the D.I.E. to shoot each leg, retracting it.
Step 5-6
Wrench & the Tank
Enter the portal in the Medical Bay to enter the Dark Aether — this lets you start a new Anomaly next to the Type 63 Wallbuy.
After the anomaly ends and you're back out of the Dark Aether, a Wrench will be on the ground where the anomaly was — pick it up.
Interact with a tank in the Yard 3 times with the Wrench to open its hatch, revealing a zombie inside.
Use an explosive lethal on the tank to make it fire at a tree.
Step 7-8
Decontamination Agent
Pick up the Decontamination Agent that dropped from the tree, and place it where the anomaly was in the Medical Bay.
Split a Megaton and bring both halves under the container in the Medical Bay to suck them into it.
All players must interact with the computer in the Medical Bay to start a short interaction.
Final Steps
Final Defense
Use the portal in the Living Room to be transported to the Dark Aether, then interact with the Anomaly in the Omega Outpost.
After returning from the Dark Aether, pick up the Photo where the portal was to start the Final Defense.
After teleporting to the Particle Accelerator, meet Orlov by Pack-A-Punch.
During the Final Encounter, protect Orlov while he repairs 3 parts of the Cyclotron.
Once all 3 repairs are complete, a timer starts — reach the Pond and exfil. Lightning Pillars will spawn, blocking certain paths.
After exfiltrating, the Main Quest is complete.
Tip
Orlov cannot die during the repairs — he'll just get interrupted, so don't worry too much about protecting him if you're struggling.