Start with a practical problem
Hallvik’s first progression chain starts with a battery in the depot. It powers a maintenance gate, opening the next part of the district. Later, the substation restores electricity, an optional pump opens a shortcut, and a control relay unlocks the regional connection. Each objective has a place, a physical action and a visible consequence.
Keep the main path dependable
Required parts have guaranteed sources. A critical relay should not depend on a lucky loot roll, and crafting an optional item should not consume the only component needed to finish a region. The later campaign content uses protected mission components to keep its two regional branches independent.
A connected city, in your order
After the Blackout District, the Harbor and Industrial Works are planned as parallel routes. Harbor radio and industrial power are both needed at the Transmission Tower. Repairing only one is useful, but cannot substitute for the other. The interactive progression page lets you try that rule without revealing the ending.
Persistence is part of the promise
The design calls for repaired routes to stay open, important rewards to remain recoverable and repeated interactions to avoid duplicate rewards. Technical work has tested parts of inventory and save restoration in isolated scenes. A full production-world save and campaign playthrough still need their own validation.