as DH, elite leaper = game over pretty much. :P Too fast to kite. I would recommend using that knife attack with overpenetration rune, that way if they are all stacked up, and at least one of them doesn't have shield up, then you'll hit that one, and if you catch him without his shield you can just spam it. Will probably take you several minutes to kill them. Shield FTL
Kite backwards, throw knife, kite backwards, throw knife, kite backwards throw knife, etc. Try to keep him in an open space and save ss for when he walls you so you can at least get started towards the hole in the wall. Overpenetration also helps you with killing any collateral aggros while you are kiting.