So I'm at the point where the main things I have to do in the game is start taking on the Vicious level dungeons, and I'm finding myself a little overwhelmed. I think I've gotten at least okay at the game, but feel like there have to be some major strategies I'm missing out on, because I don't really feel like I know how to beat any of them. The closest I've come was getting to the Matron in DI with no resources left, but other than that not much progress has been made.
What are some of the strategies commonly used?
EDIT: Thanks to a barbarian Taurog run, I was able to beat the Matron, but I don't feel like I understand how to do it WITHOUT a barbarian, either. Which I guess says to me I don't have the knowledge I need?