I'm sorry but Taurog costs must be rised again, being his worshiper makes most dungeons a breeze with Rogues and such. The tradeoff between leaving magic and getting overpowered itemsis leaned in favour of Taurog. I've beaten most of the dungeons I've been in by just following the "Taurog path" and I never looked back, gotten the "Specialist" Badge every time. In some of the earlier dungeons I didn't even need potions.
You just need to step up your game and spend time playing. This is not Modern Warfare where you're taken by the hand, frustration kicks in because that's the way the game is played. Seriously, this trend in dumbing-down games (Diablo 3 the latest) for those people who OMGDONTHASTIMETOPLAY is making me angry. This game like many others like Civilization, Rogue, Super Meat Boy, Starcraft...requires time, thinking and skills, and other people can play it. If you can't you shouldn't have bought it in the first place because you had the alpha to try, if you did don't ask for a refound as it is your fault.