I still haven't really been bothering with sneaking, and I kill everything I see in an attempt to level my magic skills. I didn't have any major issues with the Falmer/Chaurus, but I did die once when I got swarmed. I basically just kited them through the dungeon and took them down that way.

I had to fight a troll and an ice troll on the way up the 7000 steps and had to use the same tactic. Sprint away, turn around and blast face for a few seconds, sprint away...etc.