The key is not to survive but do enough dps to make the other one run ... or if that fails , you still got 2 self rez
There is no surviving a Sin attack, they eat mages. Well, apart from perking From the Beyond and hellstepping around.
Necro crits after they die cus they go rez and go SW and dots still stay attached to other for 30 secs.
All in all, HoX needs skills, gear and AA to shine. Or you can just forget all that and go nuts for a laugh.
No retreat, no surrender ... die and self-rez .. .that's the way of the HoX.