Wait wait wait waaaaait a second.
Stanley found the Arkenhammer in some ruins.
Some ruins! We know from here: http://erfworld.com/wiki/index.php/TBFGK_78
that one way we can get ruins, at least, is from a ruined city. They must have been close by! This story is all about Faq and its neighbors, some previously unheard of Sides.
Haffaton currently has in its possession the Arkenhammer. That's why
they're so big on Fate, and Wanda being necessary to their side. Haffaton falls, Stanley picks up the Arkenhammer in a ruined city.