What is confirmed
The campaign begins with A New Day in flooded Arkham and moves through connected survival-horror areas built around keys, evidence and environmental puzzles. The main route includes the Library Annex, Redemption Church, Devil's Reef Hotel, Akeley Memorial Hospital and the later ship sequence. Use the map and current objective to keep chapter names aligned with your save.
What to do
Before leaving each safe room, save, check the map for unopened doors and carry healing plus ammunition for more than one weapon. For the opening route, collect the electrical fuses from the Radio Store before returning to the floodgate; the Apartment 6 code is 1908. When a route stops at a locked mechanism, read nearby notes and connect matching evidence in Investigation Space before looking for a solution.
What is not confirmed
This is a route hub, not a replacement for every hidden item, upgrade or optional investigation. Later puzzle and boss details can spoil story beats, so use the dedicated guides only when you are stuck. Map names and item placement can change in a patch, and this page records the launch build checked on August 24, 2026.
Player questions
How long is The Sinking City 2's main story route?
The route runs from the flooded Arkham opening through several connected areas to the final encounter. This guide focuses on progression checkpoints rather than a completion-time estimate, which varies with exploration and difficulty.