Here's an interesting bit of info for Dorn's Deep. At the start, in the cave with the Ettins and Blue Myconins, they regenerate every time you leave the caves. If you have a thief with really good hide in shadows, or someone who is invisible, get the character to sneak up on an Ettin. If the Ettin is within range of other Ettins or Blue Myconins, he will attack them. If you wait until the Ettins have beaten each other up(almost dead), you can appear and lure the Ettins back to your party and kill them with little risk or damage. It takes a while, but it's kind of funny to watch an Ettin whale on a Blue Myconin (the Myconins just stand there and don't fight back).