Arkham Horror: the Drowned City review (review copy provided)

About Arkham Horror: The Card Game – The Drowned City: Campaign Expansion, from BoardGameGeek:

It was supposed to be one last job. At the behest of shadowy antiquarian Randall Tillinghast-who presents them with an offer they can't refuse-our investigators travel to the South Pacific and the vast, alien city of R'lyeh. However, the more they explore, the more terrors they discover, and as a looming sense of dread grows, they find themselves-and all of Arkham-faced with a colossal threat. The time has come. Cthulhu has awakened, and Arkham will never be the same. -description from the publisher