Some NW mechanics questions

Two days left and I still don't know some of this stuff. :/

1. Take a look at some NW videos in which they use Vampire. It seems to be 4 separate hits (it knocks back monster way more than say, Strafe). Does this mean that WDEF would kick in for all four hits?

2. Is Poison Sling's poison non-elemental (to fit the Dark theme) or Poison-element?

3. How the hell am I supposed to mist skeles at say, level 90 without dumping tons of AP into HP (or washing, which I can't do) AND having an HB mule?

[color="#cc8899"]1. Dunno
2. Seperate element
3. You do have 70 extra AP.[/COLOR]