Doc--You'll be able to fight Demons in the last 2 rooms you come to when going thru the temple. Just save right before the room (twirling around on the ledge outside the room seems to yield the same caliber of enemies, if you prefer). To make things faster (especially since you're probably high enough level to hack & slash thru everything) just turn off all sound and delays, and just hold down ENTER during every encounter to have everyone fight every round. Doing this let me whip through most encounters in under 1 minute so I could quit/nosave and go back again. Good Luck.
--Dave