What was reported
A single community write-up describes a color chain in the cathedral: red key to a red room, gold key to an upper-left guard room, blue key toward a Great Weaver control room. It cites a player route from a Nova discussion and warns that it is not a verified speedrun. No Steam achievement is named RED_KEYS. No patch note mentions a red-key fix. That is why this page does not say “all red key locations” as if the list were closed.
What to do with the search
If you are stuck on a colored door in the cathedral, the report is a hint about order: red, then gold, then blue. It is not a map. Check the control room after you have the blue key, and do not skip the gold door on the way. If your build has no such keys, you may be in a different puzzle — the keypad mazes, or Vos’s church key from the supplies box, which is a single key and not a color set.
When a primary source or two agreeing in-game notes exist, this page will replace the report with a folded location list. Until then, the honest page is the warning plus the color order people are already repeating.
Show a stronger hint
A colored door wants the matching key. The reported order is red, gold, blue. Confirm it on your save before you backtrack the whole cathedral.
Show the sourced solution
Not confirmed as a complete list. Community report only: red room, then upper-left guard room (gold), then Great Weaver control room (blue). No official “red keys” checklist exists in the sources checked on 18 October 2026.
