- Katılım
- 31 Mar 2025
- Mesajlar
- 40

In Atomfall, you may find the need to unlock the Sewer Tunnels in the first region of the game. There's a key that grants access, but that's just the start. A Maintenance access door within requires a second Sewer Tunnel key, which isn't as quick to locate.
To unlock the Sewer Tunnels door in Atomfall, you must locate a specific shopkeeper willing to grant you a key — for the right price. But how do you start your hunt for this mysterious vendor?
In northwestern Slatten Dale, there is a locked door leading to the Sewer Tunnels. Its coordinates on the map are 24.9E, 78.1N. But what about the key?

Screenshot by Destructoid
Where to find the key to the Sewer Tunnels in Atomfall
The key is in the possession of a merchant in Slatten Dale who gives it up if you're willing to trade. Attached to the wall left of the door is a note titled "Yours for a fair price!" Reading it reveals that the trader Molly Jowett has the key for the concrete shelter that leads to the tunnels. She requests that anyone interested should find her "down the hill."

Screenshot by Destructoid
Leave the bunker and travel northeast along the path, descending the hill. Walk until you spot smoke rising from a small shelter in a clearing.

Screenshot by Destructoid
This is Molly's Trader Camp, and meeting with her will put it right on the map at 26.3E, 79.0N. Speak with Molly until she gives you the option to Barter.

Screenshot by Destructoid
Select Barter to check Molly's stock for the key. In the list of items on the right-hand side is what you need: Concrete Shelter Key.
Best items to trade for the key
Like other traders in Atomfall, Molly uses the Barter system, which sees you trading items for items — no cash required. But some traders prefer certain goods over others, and Molly is no exception. She'll trade you for the key but cares more for particular items. You can check trader preferences by looking in the To Give section of the Barter menu.

Screenshot by Destructoid
Here are some of Molly's preferred items from Low to High:
- Bandages (Low)
- Tea (Low)
- Cricket Bat (Medium)
- Rifle Ammo (High)
- First Aid Kit (High)
- Painkillers (High)
A single High item may not be enough to earn the key. You'll need to mix and match items until the scales tip in your favor. This is also a good way to offload a lot of junk.
Return to the Concrete Shelter with the key and unlock the door. But there's another locked door in the sewer tunnels that requires a key.
Where to find the Sewer Tunnel Key in Atomfall
Following the Maintenance signs in the Sewer Tunnels will lead you to the locked Maintenance room. Opening it requires the Sewer Tunnel Key, which doesn't seem to be anywhere close — you'd be wrong. The key is nearby in the locked Control Room, but reaching it isn't as simple as you think.

Screenshot by Destructoid
The Sewer Tunnel Key can be found by accessing its locked Control Room via the Casterfell Woods region. Look for signs pointing to the Casterfell Woods in the Sewer Tunnels.
Follow the signs to a gated door at the end of a sewer tunnel leading north. The door is refreshingly unlocked.

Screenshot by Destructoid
To find the room with the key, you must first access the elevated highway that runs vertically through the middle of Casterfell Woods.
The fastest way onto the road is to head north from the Sewer Tunnel exit. Walk for a short way, and then go east when you're able to travel under the road.

Screenshot by Destructoid
Hug the rocky wall to your right and follow it going west. You'll eventually begin walking up a short hill that leads to two ladders. Take the ladders to the road and head south while avoiding bandits until you reach the closed-off tunnel.

Screenshot by Destructoid
To the left of the southern tunnel entrance is another concrete shelter.

Screenshot by Destructoid
Open it to enter the Control Room. Search the room near a desk to find a corpse.

Screenshot by Destructoid
Looting the corpse gives you the Sewer Tunnel Key and a note. Take the key back down to the Maintenance Room and unlock the door.
Once inside, squeeze through the gap between the crates and toppled shelves to reach the back area.

Screenshot by Destructoid
There, you'll find a wealth of resources such as cloth, ammo, string, and more. Check the ground for a B.A.R.D. Crate, which contains items and a Training Stimulant.

Screenshot by Destructoid
With that, you've finished with the Sewer Tunnels and are ready to tackle the next Atomfall mystery.
The post How to unlock the Sewer Tunnels in Atomfall appeared first on Destructoid.
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