Go to Cintland, the altar of Zur in the middle below the map, with two priests on it. You get a hammer when you kill it. Then go to Sinsaro all the way up to the very inside, there is an arena like an open space, in the middle is a table, a sacrifice above, the stands are full of wolves, after killing or drawing away the monster, use this hammer on the table can be charged (that is, right-click the hammer in your package), and after filling it, you have a hammer to strike the gong