It would have to be done by a mage, you couldn't buy potions or pay healers and the ingredients for tech heal stuff can be scarce. I suppose you'd kill all the followers to, so they couldn't heal you.
Killing everybody is impossible because there are 2 ppl in the game that killing them will transport you elsewhere. My opinion of course.
That is a very valid point, I'd forgotten about them (I haven't played the game in 6 months). So are we safe in assuming that you can kill everyone except those two people?