To open the hidden room in the library, you must light specific candles based on the diagram from the chapel. Think of the 12 candles as a clock face. 3, 4, 8, 9, and 12 o'clock.
Talk with every character. Ensure you exhaust all dialogue options with everyone you meet. Snoop: Find all 13 game items. Syberia 2 XLBA - Xbox 360 [Arcade]
Use the 5th coin (reindeer) on the left machine. To open the hidden room in the library,
Scan every scene thoroughly. The game is a classic point-and-click; if you are stuck, it is likely because of an uncollected item or an unexhausted dialogue. if you are stuck