I've now improved the hints you get from the scrying mirror to include all possible next locations and / or pairings, along with the ghosts they refer to, so hopefully this will clear up some of the confusion.
Also achievements have been fixed yet again (they weren't showing up on the stats page), though you may still get some notifications of past achievements before they're added to the list. Thanks for your patience.
Thanks to anthanddi for that bug list - I'll be adding more fixes soon.