I am another noob and was at the same point last week. I did parts of of a lot of areas to get past this point. I think I was around L10 when I started doing parts of the Aranea cave and spiral pit as well as the upstairs bit of the first Kyass quest.
I had to try and lure out my opponents by going just into the room and then running away. Then I would leave my 3 strongest to fight while my weakest (my sorceress at that level) ran away as far as it could until the others died then I would bolt for the closet town and restore them and come back and do it all again.
It is a bit time consuming but it was a good way to get more money to pay for my mage and sorcerers training.
I havent played any sort of game for about 10 years so am new to everything. I recently got an ipad for work and bought Avadon, now I am hooked!