Thank you for the kind words. I'm glad the atmosphere and the pressure from the clock mechanic landed well.
You are right about the linearity; it was a deliberate design choice. Ordainer Pellen is not static; he actively moves through the Ossuary to gather components for his ritual. I tied his movement directly to the clock to create the feeling of a chase, making him an active antagonist with his own goal rather than a stationary boss waiting in a final room.