arkham horror lcg blood on the altar uitbreiding engBlood on the Altar is the third expansion in The Dunwich Legacy campaign for Arkham Horror: The Card Game . In this expansion you delve deeper into the secrets of Dunwich, where a number of disappearances occur that may be related to the events in Arkham. But the more you discover, the more you get the idea that the villagers would rather be rid of you than be rich. Apparently the secrets within Dunwich are not allowed to be shared with the outside