Hello everyone!
For starters I want to say that I am placing this thread in the Thief thread since this seems the best place for my targeted audience. Everyone who is whining on the Thief and about all the stealth stuff comes to this particular bit of the forum anyway!
Without further ado I am a lvl 80 thief, have logged around 2050 hours on it and can say I main it intensely. Yet every time I log on and see the Thief forum it is filled with requests of nerfing the profession into the ground and of people with full glasscannon builds getting hit for high amounts of damage. To the latter I say: IT’S YOUR OWN DARN FAULT! :P
But how to fight Thieves who ‘permanently’ stealth?
To know this is to know there are 2 kinds of thieves who have easy acces to stealth via their weapons and thus enabling to ‘perma stealth’. These weaponsets are the Dagger/Dagger (of which skill 5, 6 initiative cost gives stealth in melee range) and the Dagger/Pistol (of which a combination of skill 5 and skill 2 give stealth, a hefty cost of 6 + 3 initiative to pull that off).
A Thief in WvW usually has Shadow Refuge on him aswell and sometimes Black Powder (instant stealth smokebomb).
Dagger/Dagger
The main damage of these stealth builds usually come from the skill Backstab which requires you to atleast be close to your enemy. If you get hit by a Cloak and Dagger and the Thief stealths. All hope is not lost. He has 3 seconds to hit you before the stealth wears off. Use this to your advantage! The Thief will want to hit you, so if you make it hard for them to position themselves behind you, this will reduce damage. If you count to 2 or try to anticipate when the Thief might strike, dodge the complete attack. This will render the Thief without stealth (if he was slow) or atleast with 1 second of stealth left.
Only use your dodges for making sure he cannot stealth or hit you with the tremendous painfully backstab. Don’t expect a flawless fight. You will get hit and getting hit by certain attacks is part of a strategy to take them down.
If a Thief spams heartseeker while you are on full health. You can allow yourself to be hit by some of them. His initiative will be low and the blows will be fairly weak. This can be used to draw the Thief in a nasty trap of your own. Be clever with your own positioning since the Thief is a primarily position focussed profession. Screw up their board and they are bound to run.
An example of how I killed a Thief from Piken Square yesterday.
I was youtubing a bit for some metal but had vision on my hp bar. I saw it quickly downed to 50% health. I was in my venomshare build and had D/D active. I used my stealth heal followed by basilisk venom. The other Thief didn’t hit me with his cloak and dagger so was visible. I threw a dagger (Dagger offhand skill 4) to turn him into stone. I had a second and a half to close in and use my own cloak and dagger to prolong the stun (trait residual venom). I succesfully connected with cloak and dagger and proceded with a backstab on my stoned (huehue) victim. I activated my Drake venom for chill after my backstab. I knew the thief was going to stealth or try to so I had to keep him near me. As the stun wore off he used cloak and dagger, I got hit BUT I knew where he was. I turned a bit to my left and used cloak and dagger and backed off. The other Thief was dumbfounded and tried to beckon me over with /laugh. I whipped out my shortbow and started shooting. The other Thief used cloak and dagger + steal combo for instant stealth. I could see the animation for cloak and dagger and barely managed to dodge it. I knew now that the other thief either had half initiative or almost none. This was my time to strike. Basilisk venom was recharged again, I activated it and threw a dagger > cloak and dagger > backstab > followed by the drake venom > heartseekers and a win.
With the fight above I want to make clear that positioning and anticipation is key. If a warrior was in my same situation, use your blocks or defensive skills to negate or mitigate some of the damage. Wear him down. The same advice goes to other professions!
Dagger/Pistol
This is a much harder setup to beat if you are primarily focussed on melee damage. This kind of Thief doesn’t really need backstab to kill you. If you stand in the black powder smoke field…well…that’s not really smart :P If you do decide not to stand in the smoke field, the Thief may use heartseeker (a leap finisher) to go into stealth via their smoke field. Try to stay at a distance of a few seconds walking. This will make sure the Thief has to pull off some awkward movement to connect. usually this will fail and the Thief becomes visible.
Again positioning is the key in this fight. Backstabs are a one trick pony. Facestabs don’t do as much damage, they still hurt but not as much. Anticipate the movement and try to imagine where they might be headed.