As the title suggests i want to throw in 2 of my strongest sister builds.
Double dagger / Javelin hunter build
https://www.ranalds.gift/build/LkSmpvwLK5h0mXuZcGfm/view
Sword & Dagger / Briarwood Staff hunter build
https://www.ranalds.gift/build/nWpN5FabrgJ1E786OhXq/view
First of these builds are meant to make you the number one elite killer in your party. The build with the the Javelin even has the potential to make you the number one monster killer.
What are we looking for?
To achieve this we want to get as much damage increasement as possible on single target.
So we go for 20% damage increasement with smiter, 24% damage increasement with stacked poison and an additional 25% damage increasement from hunter
Giving you 69% damage increasement!
How it works?
Our core talent is Briarās Malice which gives you 2 guaranteed critical strikes on ult
To utilize this talent we do the following rotation:
Ult - > range attack on a armoured and an unarmoured unit to trigger hunter on both armour classes at once - > go into melee
When hunter runs out repeat.
Making sure our ult is ready as soon as hunter runs out we will take Bonded spirit which cuts our cooldown in half.
With a proper playstyle you should now be able to keep your hunter buff up permanently!
To make our ult spamming less annoying for our teammates we take Blackvenom Thicket as our level 30 Talent.
Noone likes it if a sister is constantly spaming walls without any need 
Now we go into some weapon mechanics.
Sword & Dagger
Single target attack sequence : Push attack - > heavy attack
Horde attack sequence : light 1 - > light 2 - > push (not push attack) - > block cancel
Dual daggers
Pretty much straight forward with spaming lights against horde and heavies on armoured.
What is worth to mention is that if you fight chaos warriors do a jump heavy attack to hit headshots more easy.
Since we dont really need attack speed on dual daggers we can take parry which can be a nice save in hot situations. The timed block mechanic makes that blocking 1 second before the enemy is connecting wont cost any stamina shields.
Javelin:
We most often only use our javelin after we have used our ult to get the hunter buff.
Keep in mind that only thrown javelins will trigger hunter!
Against monsters we use our ult and throw a javelin at it to trigger the hunter buff, afterwards we immidiatelly go into melee combat with our javelin to do the most damage possible.
Why are there 2 builds for sister hunter?
The dual dagger/javelin build is the build which deals the most damage. It deals the most elite damage due to dual daggers and the most monster damage because you can melee the monsters with your javelin which deals tremendous damage! But it is also the build which really deserves the phrase āhigh risk, high rewardā. And on top of this you will be more busy in your overall gameplay because you have to releod your javelin a lot since we run hunter on it and not ammo regain on headshot.
The Sword & Dagger build is the more balanced one and the less busy build because we dont have to reload our ranged weaopon. But it also deals less damage (but still pretty high damage).
If you want to tune the second build to more damage you can also run double dagger/ briarwood staff!
Have fun and feedback is very welcome 
Worthy to mention if you are playing legend and below you may have trouble with THP regen because there arent as much elites to kill to fill your THP if your team has trouble to keep their health up.
For playing legend and below just take sword & dagger/ briarwood staff build and switch the THP talent to THP on critical strikes and headshots then you should be fine!