The Marathon wiki

Explore Perimeter Complete all exploration challenges in Perimeter Unlock: [unlockname]	Discover Region: Hauler Open containers in Hauler in Perimeter Unlock: [unlockname] Intel: Hauler Overview
Discover Region: North Relay Open containers in North Relay in Perimeter Unlock: [unlockname] Intel: North Relay Overview	Discover Region: South Relay Open containers in South Relay in Perimeter Unlock: [unlockname] Intel: South Relay Overview
Discover Region: Overflow Open containers in Overflow in Perimeter Unlock: [unlockname] Intel: Overflow Overview	Discover Region: Station Open containers in Station in Perimeter Unlock: [unlockname] Intel: Station Overview