You use the Terrace Key on one of two doors at the large, red facility north of the Hauler on Perimeter. The first door is at ...
Where to find the locked door for the Maintenance Pump key in Marathon and how to get the key if you've found the door first.
There are two ways to get Lockbox Keys in Marathon. You can either: Between these two methods, you’ll likely find more ...
Do you need help finding the door that requires the Tunnels Office Key in Marathon? This guide has you covered.
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Where to Use Lockbox Keys in Marathon
Lockbox Keys in Marathon unlock special loot rooms marked by red flares. Here’s how to get them and where to use them.
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