Access card route

  1. 01

    Use the Old City – Residential District bus stop as your reference point.

  2. 02

    Move one full map screen to the right.

  3. 03

    Work upward through the area until you reach the yellow bridge or platform near the top.

  4. 04

    Check the right-hand side of that yellow structure. The badge blends into the background and is not presented as a chest pickup.

  5. 05

    Take it back into the power-restoration sequence and finish all three stations.

Why the sewer still will not open

The sewer is story-gated. Players report one additional main-story quest after the three power stations before the sewer route becomes available. If you restored power and still see a blocked route, continue the active story objective instead of searching for a hidden entrance.

Old City navigation also uses building interiors as passageways. When a street gate looks final, test nearby doors and upper exits before assuming the route is closed.

Quick diagnosis

  • No badge: stop searching chests; look for a hanging pickup on the yellow platform.
  • Third station unavailable: confirm you picked up the Residential District badge.
  • Sewer unavailable after power: finish the next main-story objective.

SOURCES, NOT DECORATION

Sources checked

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These links back up the mechanic, route, or noted uncertainty. Page wording, structure, and diagrams are original work.