[SPOILER] Brennenburg Castle's overall layout (complete map)

[Adny]

For maximum accurateness, you could open each map in the level editor and use walls as the unit of measurement (ie 1 wall = 1 inch/cm on your map). I believe the sketches of maps in the secret file aren't the same scale as the ones in game.

Also, the game is broken up into 3 chapters, with chapter 1 ending at the elevator, chapter 2 ending at the choir hub area, and chapter 3 ending at the inner sanctum/orb chamber. I know you listed several chapters, but I wasn't sure what the purpose of that was; whether it was speculation or your own design for chapters.