You must collect all amulets (like Timmy's Ball) and aconite plants to progress the story and reach the final encounter.
One of the main puzzles involves finding three pieces of a photograph and placing them on a blackboard to open a secret door. Notable Encounters 1st Appearance Near the stairs Silver-Chains.rar
Roughly 1 hour for a focused walkthrough or 3.5 hours for 100% completion. You must collect all amulets (like Timmy's Ball)