World / 23 / FIELD NOTE
Mortal Shell 2 Keys: Chapel, Crypt and Blackmarrow Routes
A key route desk for the Chapel Key, Crypt Key and Blackmarrow Key, with the early pickups that unlock optional weapon and dungeon branches.
Chapel Key: open the early branch
The Chapel Key belongs to the early Fainweald route and opens the Shrine of Trials branch associated with Axe & Dagger. Pick it up before committing to a long dungeon detour.
Crypt Key: keep it beside the weapon route
The Crypt Key belongs in the same planning layer as the Veteran’s Battle Axe and the King’s Crypt route. When the map points you toward a key, record the dungeon reward before spending a return trip.
Blackmarrow Key: late gate, late cleanup
Blackmarrow is a later route key. Keep it on the cleanup list beside Mammon and Unfound Path objectives so the first story pass remains readable.
Use the map marker as a handoff
A key marker is a route handoff, not proof that the door is nearby. Open the linked map marker, note the destination and return after the prerequisite Shell, boss or Beacon is complete.
Return when the destination is ready
A key can sit in your inventory while the route is still wrong. Pair it with the required Shell, Beacon or weapon objective, then make one return trip when the destination and reward are both useful. This is how the key route avoids backtracking.
Sources
- Keys: Chapel, Crypt, and Blackmarrow External guide · checked 2026-08-25
- Interactive Map: Shells, Gear & Bosses External map · checked 2026-08-25
- Walkthrough: Fainweald First, Then Mammon External guide · checked 2026-08-25