To win "Sommeril" :

(The main point of "Sommeril" is atmosphere and 
exploration. There IS a task to be completed, 
mainly to meet the HOODED MAN inside the
CONFESSIONAL within the CITADEL, but that is 
secondary to experiencing the dream-like world 
of the strange village. I hope you have fun
drinking in the eerie world I have created.)

EXAMINE PILE OF DUST on CATIDEL STAIRS

take RING from PILE OF DUST

give RING to BRIDE inside TOWN CRIER shop on
LOWER ROMARICO AVENUE.

take SILVER KEY fron the ruins of the 
disintergrated BRIDE

return to CITADEL STAIRS and UNLOCK DOOR 
WITH SILVER KEY

inside the CITADEL, enter THE CONFESSIONAL

get MASK