Subterranean Route Draft

AreaPurposeStatus
M1. Flooded ManifoldCatch breath, assess the twins, recover Rook’s route key.Playable narrative; final environmental checks pending.
M2. Narrow ConduitCyber-hound wave and collar-neutralization objective.Playable encounter draft.
M3. Pump GalleryMoving pistons, temporary high ground, optional supply cache.Concept only.
M4. Junction BlackChoose the quiet filtration route or the faster hot-duct route.Branch consequences outlined but not fully keyed.