1/ First drop 2 points into Kidney Shots and Sense weakness. Those two give most “bang for the buck” as for mere 2 points Kidney shots can add up 118 piercing damage and Sense Weaknes will add +25% crit chance to your combo openers (lethargy, GC, poison strike, Impede life).
2/ Next build up Assassination up to 5/5 – it will grant you +15% offhand when target is close to death
3/ Shift ending up to 5/5 will buff your DOTs like lotus weapon and flesh rot
4/ optionally – if you haven’t already – drop 1 point into excellent balance
As you go on you might feel like your HP is going down too fast when fighting mobs – don’t worry, at lvl 70 you will get additional 3,5% res vs all melee damage which will help a lot.
tip: Kidney shots grow stronger as the buff stacks with every hit, when you get 5x fire off OP for a very big crit. Assassins luv critz.