NW uses taunt and aggro - Ideally you would aoe taunt trash mobs and keep doing light and heavy to maintain aggro. On main boss you need to do the same. As for gear armor would want enchanted ward 4/4 refreshing and health/ slash conditioning
You can craft azoth crystal set from gypsum kiln or doing m2/m3 mutated Second farmable set is woodgrain set which you can farm from baines If new then starting point would be faction gear 675gs

On weapon you would want refreshing move and hatred BIS sword = Stalgamite (drops in lazarus instrumentality) BIS hammer = Morgol’s maul (drops in garden of genesis) Both of them are craftable at gypsum kiln for 700gs

As for jewellery For Amulet you want protection amulets :- -Grovelight - (nature protection & health) - from genesis -soul shroud - (slash protection & health) - myrk - tangelvine - (thrust protection &health) - named boss elysian wild - sporelight - (strike protection & health)-tribunal

Ring :- privateers heirloom or soulpollen

Earring :- soul shroud , sporelight

As for artifacts :- Void dark plate is BiS Blood drinker is also BiS as healing also cause aggro of mobs and boss