Necro dungeon soloing.

[Arkanjil]

I used to solo unrest fireplace and basement with my necro. I would simply undead lull mobs around then use pet to tank. Use your hp conversion to heal pet and your lifetap DoT to get health back. Your undead nuke will also be your best friend when it comes to killing skeleton monks and festering hags. :P

This was a pretty sufficient way to level from 20-38 ish.