I loved this module. The time I ran it all the way through, the party was warry after getting a boulder rolled on them, so they sent in the mega-hp fighter alone. This confused the defenders, and party did quite well in the ensuing melee before retreating. The finished off the defenders on the second try (the mountain giant got away) and proceded to explore the complex. Half went down to explore the really creepy part, and the ones who stayed behind to rest were very nearly killed by the (spoiler) old women they had "rescued". They did eventually find most of the cool Tharidun stuff at the bottom, but lost the party magic user to a bad roll on the "fruit"