to recap; we got called up in the aftermath of a pulse of magical energy that called up demons and undead in a wide radius and all kinds of chaos and havoc
we were asked by a general in the army, presumably as reserve troops of some kind, to investigate a crypt as a possible source of the pulse
we entered the crypt, and people began disappearing and reappearing like they had particularly bad lag
Eventually the rogue disappeared entirely
the tomb is infested with demons, and we defeated one of them and turned it into a zombie, using it to defeat other, less demons