Atomfall Radio Towers: How To Complete Joyce Tanner Quest
Joyce Tanner is an NPC in Atomfall and is one of the several characters offering you a way out of the Quarantine Zone. Whether you choose to trust her is up to you, but her investigation is an intriguing one, as Joyce seems like one of the good guys. Her investigation also seems to make sense, as she needs you to activate some radio towers around the maps to try and get a signal out past the Quarantine Zone and get you both rescued.Of course, things get a little more complicated than that throughout the Joyce Tanner investigation. To see a complete walkthrough of the investigation and its ending, check out the guide below. Finding Joyce TannerJoyce Tanner can be located in a couple of alternate ways, one of which actually doesn't lead you to her at all. If you discovered a radio log from Joyce Tanner, then you'll be led to a bunker in Casterfell Woods with the coordinates 28.0 E, 91.6 N. Heading to that location reveals a remote bunker atop a small cliff near a radio antenna. However, when you get inside the bunker, you won't find Joyce at all.Instead, you need to head into the Interchange. Specifically, go to the top floor of Data Store Room C, and Joyce Tanner will be there waiting for you. It doesn't matter if you visit the bunker in Casterfell Woods first or not, as this is where Joyce is located from the moment you enter the Interchange in Atomfall.After finding Joyce, speak to her to start the investigation and find out what she wants from you. Activating three Radio TowersAs you'll soon discover, Joyce Tanner is a soldier of sorts who was on a secret mission inside the Quarantine Zone when the mysterious event with the Interchange was triggered. Now, she's trying to escape the same way you are and needs to activate three Radio Towers to get rescued. If you activate the Radio Towers for her, you can join her on her escape. The three Radio Towers are located in Slatten Dale, Casterfell Woods, and Skethermoor. Each one is marked on your map if you track the Joyce Tanner investigation, but activating them isn't as simple as it seems. We'll go over each Radio Tower and how to activate it below. Slatten Dale Radio TowerThe Slatten Dale Radio Tower is located on the northeastern side of the region. It's clearly marked on your map if you're tracking the Joyce Tanner investigation, but the area around it is crawling with outlaws. Either defeat all of the enemies or try to stealthily make your way to the large Radio Tower, which is propped up by large cement blocks.At the Radio Tower, you won't be able to activate it until you acquire the Slatten Dale Radio Tower Keycard. This keycard is located directly underneath the tower, but you need to access a small cave to find it. From the Radio Tower, head south and you'll find a river deep below the cliff you're on.Jump down to the river and on top of a rock that has a green cane going across it (as seen in the screenshot above). Hop on the crane and use it to access a small cave mouth located right in front of it. Go inside the cave, loot the dead scientist at the end of it, and you'll secure the Slatten Dale Radio Tower Keycard.Head back to the tower, use the keycard, and that's one tower down for Joyce Tanner. Casterfell Woods Radio TowerNext up is the Casterfell Woods Radio Tower, which is located near the Old Mine in the northern part of the map. You'll know this location if you've completed any of the Mother Jago investigation. The Radio Tower is located high above on a spire-like formation and has two outlaw enemies patrolling the outside of it.Kill the outlaws and then approach the door to the Radio Tower. Head inside, and you'll find a note that gives you directions to find the Casterfell Woods Radio Tower Keycard. The keycard is located somewhere called "Bunker L9." This bunker is found at coordinates 23.3 E, 90.6 N. It's northwest of the Radio Tower and can be entered through large, green doors at the end of a courtyard.Inside the bunker, the keycard is located on a desk in the control room. You can enter the control room by going to the first room on the left in the bunker and climbing through a series of tunnels, ladders, and crawl spaces. When you enter the control room, you'll be overwhelmed by a poison that you can resist by drinking Mother Jago's Strange Tonic. If you don't have that, though, you can just grab the keycard on the yellow desk and then get out of the room.With the keycard, head back to the Radio Tower, activate the tower, and then go to Skethermoor for the final tower. Skethermoor Radio TowerFinally, we arrive at the Skethermoor Radio Tower, which has the most difficult keycard to find. The Skethermoor Radio Tower is located in the southeastern part of the region, and there are rarely enemies around it. Enter the Radio Tower to find yet another note leading you to the location of a keycard, which is found in the nearby Vehicle Storage Bunker. This bunker is located just north of the Radio Tower at coordinates 43.4

Joyce Tanner is an NPC in Atomfall and is one of the several characters offering you a way out of the Quarantine Zone. Whether you choose to trust her is up to you, but her investigation is an intriguing one, as Joyce seems like one of the good guys. Her investigation also seems to make sense, as she needs you to activate some radio towers around the maps to try and get a signal out past the Quarantine Zone and get you both rescued.
Of course, things get a little more complicated than that throughout the Joyce Tanner investigation. To see a complete walkthrough of the investigation and its ending, check out the guide below.
Finding Joyce Tanner

Joyce Tanner can be located in a couple of alternate ways, one of which actually doesn't lead you to her at all. If you discovered a radio log from Joyce Tanner, then you'll be led to a bunker in Casterfell Woods with the coordinates 28.0 E, 91.6 N. Heading to that location reveals a remote bunker atop a small cliff near a radio antenna. However, when you get inside the bunker, you won't find Joyce at all.
Instead, you need to head into the Interchange. Specifically, go to the top floor of Data Store Room C, and Joyce Tanner will be there waiting for you. It doesn't matter if you visit the bunker in Casterfell Woods first or not, as this is where Joyce is located from the moment you enter the Interchange in Atomfall.
After finding Joyce, speak to her to start the investigation and find out what she wants from you.
Activating three Radio Towers

As you'll soon discover, Joyce Tanner is a soldier of sorts who was on a secret mission inside the Quarantine Zone when the mysterious event with the Interchange was triggered. Now, she's trying to escape the same way you are and needs to activate three Radio Towers to get rescued. If you activate the Radio Towers for her, you can join her on her escape.
The three Radio Towers are located in Slatten Dale, Casterfell Woods, and Skethermoor. Each one is marked on your map if you track the Joyce Tanner investigation, but activating them isn't as simple as it seems. We'll go over each Radio Tower and how to activate it below.
Slatten Dale Radio Tower

The Slatten Dale Radio Tower is located on the northeastern side of the region. It's clearly marked on your map if you're tracking the Joyce Tanner investigation, but the area around it is crawling with outlaws. Either defeat all of the enemies or try to stealthily make your way to the large Radio Tower, which is propped up by large cement blocks.
At the Radio Tower, you won't be able to activate it until you acquire the Slatten Dale Radio Tower Keycard. This keycard is located directly underneath the tower, but you need to access a small cave to find it. From the Radio Tower, head south and you'll find a river deep below the cliff you're on.
Jump down to the river and on top of a rock that has a green cane going across it (as seen in the screenshot above). Hop on the crane and use it to access a small cave mouth located right in front of it. Go inside the cave, loot the dead scientist at the end of it, and you'll secure the Slatten Dale Radio Tower Keycard.
Head back to the tower, use the keycard, and that's one tower down for Joyce Tanner.
Casterfell Woods Radio Tower

Next up is the Casterfell Woods Radio Tower, which is located near the Old Mine in the northern part of the map. You'll know this location if you've completed any of the Mother Jago investigation. The Radio Tower is located high above on a spire-like formation and has two outlaw enemies patrolling the outside of it.
Kill the outlaws and then approach the door to the Radio Tower. Head inside, and you'll find a note that gives you directions to find the Casterfell Woods Radio Tower Keycard. The keycard is located somewhere called "Bunker L9." This bunker is found at coordinates 23.3 E, 90.6 N. It's northwest of the Radio Tower and can be entered through large, green doors at the end of a courtyard.
Inside the bunker, the keycard is located on a desk in the control room. You can enter the control room by going to the first room on the left in the bunker and climbing through a series of tunnels, ladders, and crawl spaces. When you enter the control room, you'll be overwhelmed by a poison that you can resist by drinking Mother Jago's Strange Tonic. If you don't have that, though, you can just grab the keycard on the yellow desk and then get out of the room.
With the keycard, head back to the Radio Tower, activate the tower, and then go to Skethermoor for the final tower.
Skethermoor Radio Tower

Finally, we arrive at the Skethermoor Radio Tower, which has the most difficult keycard to find. The Skethermoor Radio Tower is located in the southeastern part of the region, and there are rarely enemies around it. Enter the Radio Tower to find yet another note leading you to the location of a keycard, which is found in the nearby Vehicle Storage Bunker. This bunker is located just north of the Radio Tower at coordinates 43.4 E, 74.6 N.
Inside the Vehicle Storage Bunker, you'll find several enemies that you want to take out as quickly as possible. For the keycard, head into the left room from the entrance to the bunker and find a small rectangular air vent with a red glow to it (as seen in the screenshot above). Climb into the air vent and then climb up some boxes to reach a control room, where you can find the Skethermoor Radio Tower Keycard sitting on a table.
Grab the keycard, head back out to Skethermoor, go to the Radio Tower, activate it, and then you can finally return to Joyce Tanner in the Interchange.
Head inside the Windscale Plant and Oberon Digsite

When you return to Joyce Tanner in Data Store Room C, she'll fill you in on her plan. For starters, she needs you to collect a sample of Oberon, the meteor that caused the entire Quarantine Zone to be put up in the first place. Joyce then wants you to destroy the entire Oberon Digsite area.
You can only access Oberon by powering up every Data Store Room, finding all Interchange entrances, and then activating the Central Processing Unit at the center of the Interchange. Once all that's done, you can access the Windscale Plant via the main CPU room.
Inside the Windscale Plant, you need to make your way through some tough thrall enemies as well as some smashing plants. Keep heading straight and following your quest marker until you reach the Oberon Digsite location. Here, you can see the shiny purple meteor in the center of a large cavern. You'll also see a huge building to your left. Head to the building and then make your way into the hallways, where you need to locate a generator that powers the sample extractor.
Extract an Oberon Sample

The generator you're looking for is located in the central part of the large building on your left. You'll know you've found it when you see the structure in the screenshot above.
At the generator, insert two Atomic Batteries to get it up and running, allowing you to extract a sample of Oberon at the command center. The command center is located a few doors down from the sample extractor in the same building. It's a large room with several different command stations and levers that control different parts of the digsite.
In the command center, you can activate a lever that allows you to extract a sample of Oberon. It's near the front viewing area of the room. You can see the sample being extracted from the viewing area, and after the sample is delivered, you need to go and retrieve it right near Oberon itself. Once the sample has been collected, your next job is to destroy the entire digsite.
Self-destruct Oberon and finish the Joyce Tanner questline

You can only self-destruct the entire digsite by going down into the digsite and activating four self-destruct bombs. The bombs are located on both sides of Oberon, two on the left and two on the right. You have to deal with two robots on both sides, as well as some thrall enemies.
You'll find the self-destruct bombs on the large metallic cylinders with a red glow on the bottom of them. The cylinders also have tanks on top of them that are marked with the word "Explosives." You can clearly see them in the screenshot above. Each one is activated by interacting with the bomb at the base of the cylinder.
Once the bombs have been set, return to the command center and pull the "Self Destruct Console" lever on one of the left command stations. This causes a countdown to start, giving you precious minutes to escape the Oberon Digsite area and the Windscale Plant.
After you escape, return to Data Store Room C to find a note left behind by Joyce Tanner. She has fled the area, but has given you coordinates to a location in Casterfell Woods. When you arrive at the coordinates, there's a plane that's waiting to get you out of the Quarantine Zone. It seems Joyce was able to get through to someone after all.
Atomfall ends after you get on the plane.