STR: Enough for gear with any mods you have
DEX: Same
VIT: Everything here
ENE: Base

This is my skill setup:

20 Venom
20 Shadow Master
20 Claw Mastery
10 Weapon Block
10 Fade
1 Dragon Flight (Prereqs)
1 Blade Shield (Prereqs)
1 Mind Blast

Current Gear (vs melee)

2x Chaos with +3 Venom Mods
48% Bramble Armor
Shako with 5/5 Poison Facet
Mara's Ammy
Trang's Gloves
Perfect Verdungo's
Gore Riders
20 DEX Raven Frost
BK Ring

I carry a CTA and Lidless on weapon switch.

I've got Nat set in stash for vs casters and various absorbs. Also have an Angelic Ring + Ammy if I face something I can't hit even when I use Cloak of Shadows.

Charms: 10x Shadow GCS, Annihilus, and 9x resist/run-walk charms.

I've got about 2100 life when BO'd. Not too bad. WWsin is one of the better choices to put down annoying necros.

I can post a more in depth guide on Thursday...

Edit: Just FYI, I have a 5.5k/5.3k Whirlwind, and gaining 2.1k from my Venom (which acts over 0.4 secs). Venom is fast enough for multiple triggers in a whirlwind.

Blade Shield also carries your Venom damage, so you don't even need to actually hit them at times. WWsins can be dangerous.

blckshdwdragon may also have some suggestions.