This guy pretty much made the build popular in WvW for its ability to fight more than 1 opponent.
Build: http://www.gw2db.com...|0|0|0|0|0|0|0|
Goal: Bleed people to death <--- (yup that simple)
Your weapons are Pistol and Dagger
Secondary: Dagger/Dagger or SB
Main form of attack is Vital shot and Sneak attack and cloak and dagger to stealth.
You don't use body shot because its a initiative waste. Shadow strike is good but situational.
Gear: Carrion (can be changed but I will expand on that later)
Trinkets all carrion, weapons carrion.
Runes: 2x Rune of the Krait 2x rune of the afflicted 2x rune of the centaur (45% bleed duration)
Sigil: 1 superior sigil of agony 10% bleed duration and 1 superior sigil of corruption
Traits: This is the part I like about the build
Its flexible
For Wild Bill style it is
20 points Deadly arts- venomous strength, quick venoms (20% condition duratoin)
30 points Shadow arts- blind on stealth, leechin venoms, regenerate health in stealth
20 points acrobatics- vigor on heal, pain response
Utilities: Signet of shadows, Devourer venom, Spider poison.
Ok now the variety:
You can run this all kinds of ways the Wild Bill style is just a good guideline. You can run this 0/0/30/20/20 etc.
The main thing you want to keep in mind is bleed duration the sweet spot in my opinion is 75% duration then you can add some condition damage on top of that.
Condition duration > Condition damage when it comes to a condition like bleeds.
(A) Simple example is a bleed that does 100 damage that lasts for 7 seconds does 700 damage
(

In order for B to beat example A at 4 sec duration you need 180 damage bleed (good luck getting that rofl)
I know the next thought is condi removal but with condition duration you have an easier uptime on bleed stacking than with shorter bleeds especially when you factor in things like dodging, healing etc.
The impact of condition removal is reduced if you have longer duration. It is much easier keeping a stack of 5 bleeds on someone during the course of a fight if your bleeds last longer than 5 seconds.
Vital shots attack rate is 1 second this is looking at worse case scenario if you can't land a Cloak and dagger for sneak attack which isn't always going to happen.
Wild bill style P/D is less forgiving you have no stun breaker, and no condition removal except for pain response (45 sec cd) it is in my opinion the strongest of all the variations because of how fast you have access to venoms and weakness.
Weaknesses: You wont beat a good bunker Ele or Bunker Guardian
You just dont do enough damage and they have easy access to condi removal. Every other class should be doable in 1v1.
The thing about this build also is that you really don't have a way to stop anyone if they are really mobile. Fortunately this is WvW build and in WvW people see player and turn into bulls fighting a matador and don't try to run until its to late. You can distract a group of 5 easily (since people hate thieves) can you get a kill in 1v5 maybe but its hard but you can troll pretty easily.
This is my first time writing one of these I probably forgot something but if you have any questions feel free. I love the build and it is my main setup for WvW. Its not for everyone it pretty much is the thiefs version of a bunker though your not really tanking. You can survive burst though you will have about 21k hp but its kind of like slow to kill compared to a typical D/D bs burst build.
I personally run 0/0/30/20/20 and sometimes switch to wild bill style.
Also I wanted to add is your effectiveness can be gauged by the attack stat. What I mean by this is Your attack stat takes into consideration your power, weapon damage AND condition damage.
Alot of people look at the attack stat and say OH YEA 3k attack but attack stat is important if you can Combine your damage and condition damage simultaneously and regularly.