I have run this adventure twice now, with Shadowdark and it's been very enjoyable. The only thing I stumbled with were the Halls of Regret. The rooms are supposed to shift every time someone enters the area, but I feel like that's a neat idea that ends up being underwhelming because when are the PCs going to enter the area more than once? I suppose they go back that way when they leave, but that feels pretty much after-the-fact. The second time I ran the adventure I had the rooms shift every time they left one ... only letting them out once they'd gotten to experience each of the four rooms at least once. That worked a lot better. 

Overall great! The Mad Goddess herself has become an important part of my campaign world. One of the PCs swore fealty to her so she made him a Warlock in her service, and now he's recruiting more townsfolk to come help rebuild the cathedral.  Can't wait to see where this goes!