Originally Posted by Natural

If you have some sneaky druid and rogue friends, they can sneak through the underbog past the black stalker to the drop down near the zone-in. Have the rest of your group suicide at the entrance and have the druid brez someone else who can resurrect. You can kill the black stalker in less than 10 minutes. I haven't tried this myself as I was lucky enough to get these on my first trip, but others have reported success.