Wear Krystine's mask before talking to the chained kids so the guards ignore the conversation reset.

Listen to the mechanical bird by the cistern—the melody spells out the valve code for the water puzzle.

The stained-glass colors go amber, teal, violet; match that order when opening the triple-lock gate.

Hand the minotaur statue the broken chain link to unlock the Silent Mercy badge and calm the hallway spirits.

The kitchen cupboard hides chalk only after your second search—without it the sigil puzzle cannot start.

If you leave one chain uncut the epilogue art changes, but the secret sketchbook ending disappears.

Speedrunners flip the watchtower hourglass early; it shortens the guard patrol by a full loop.