Diablo 1 HD Hellfire Mod | Awake

I don't know if it's intentional or not, but when I went down the treasure cave to deal with the mages, once they attacked together, they came back to life multiple times. In torment, it is rather tough to deal with them if they come back with full hp once I somehow kill about 2 of the group.

I think what's happening is the necromancer in the group can start reanimating the other ones in Hell and Torment difficulties, but I'm not entirely sure. Either way it doesn't happen in the first two difficulties so it's definitely intentional.
I always just camp in a corner and wait for them to come to me one at a time, and then move to a different room before they can come back. Takes a while but seems to work.

I don't know I seem to recall that even killing the necromancer didn't prevent this, they just randomly back up as if the respawn would repeat.