Congrats Dude 77 on beating the spire. There are no more required quests for the Ishad N´ha section. The required are Shurugeon castle and the Spire. There are a few more optional dungeons though. The Stout Mines are one place you definitively should visit. The mines will supply you with a nice set of armor and you need to run a round in there to become an assasin. There´s also the Boogre caves which I strongly recommend. Now I may not be that objective since I have a soft spot for boogres lol
. But there are some nice items and traits in there (must complete to become zenmaster). And of course the guild quests. (They send you to the boogres and the stouts).