Find the sewer entrance
Current guides point players toward a manhole/sewer entrance before they start the lever puzzle.
Route support
Use this page to track the sewer gate, colored lever puzzle, Sewer Key route, and anything that blocks the path toward later-game areas.
Current guides point players toward a manhole/sewer entrance before they start the lever puzzle.
The public route uses blue, red, green, and purple lever states. Note which levers are pulled or reset.
The community wiki separates the Sewer Key route from the UFO Key route, so keep both checklists linked and updated together.
The community wiki reports that the Sewer Key appears after a lever sequence that starts with blue, red, and green, then resets red and blue before continuing through purple and red. Treat this as a route draft until you verify it in your own gameplay session.