Oh, caltrops jagged spikes, sentry with guardian turret, gloom or smokescreen or both if you like, preparation if you want, and gas grenades.
Passives are custom engineering for longer traps, cull the weak since most of the damage comes from caltrops, and whatever else.
Some like to add in cluster arrow as a hatred dump, some like to use fan of knives, some like to use mark of death, whatever suits your playstyle. My friend doesn't even use any hatred spenders at all.
Get as much life on hit as possible. If you want to be cheap, you can get a low DPS high life on hit off hand crossbow since the offhand DPS doesn't matter for caltrops and grenades.
Basically, 5 stacked caltrops gives you a shit ton of life on hit procs. Gas grenades gives you even more.
You can also add stun/freeze on both weapons, stun on gloves, and freeze on your belt. Those hit procs will also cause a lot of CC procs too.
You might have problems if your nats helm has too much % to fear since they'll run out of your traps. The solution to that is to get a 1% fear nats helm, or to get a nats xbow offhand with life on hit and stun and then replace the hat.