Hearthpwn

I have never won against kingsbane rouge, I have tried various decks but it does not work. Flood the board? vanish sap etc. Play control? MRGRMRGL MRGL and i lose all my important cards. go face? He goes face and lifesteal.

How do you lose to Kingsbane Rogue?! Just make sure you spend rather than hoard cards and put face pressure on. Only way to lose is if they draw the nuts and get a huge lifesteal weapon early on.

You gotta kill it early on or just keep decent board. If it comes to late the best thing to deal with it is divine shield since attacking it doesnt trigger lifesteal. Small taunts defending bigger minions works too.

If u play warlock and survived till both of you are out of cards you can play weapon removal and Gnomeferatu for 100% chance milling his Kingsbane.

Yip.

Aggro works normally quite well.

He will not have a proper blade ready to clear the board. In his early game he only has sap and can attack.

I also love to see a Gnomeferatu removing the blade.

KingsBane Are free wins just rush them down

if you make the game longer than it suppose you will lose

unless  u OTK

OR

 play my hunter Secret deck  in my decklist and u will get legend just like idid this season and last one, tho i made it not commono deck but so strong before new expansion

Be aggressive. That's the only chance. If it goes to lategame, it is very difficult to beat them because they will have a huge lifesteal weapon that is very difficult to outdamage. With Jade Druid I sometimes manage to win the lategame (Taunts and a few 8/8+  will kill him in 1 turn), but the key is to put pressure on him as soon as you can.

Silencing the weapon buffers with deathrattle is also helpful.

You need to rush them fast.

Either with classic face aggro, or repeated board flood.

If you let them build a big dagger, it is often too late.

I have never lose to this deck with Jade druid, even with the 10/3 lifesteal weapon he have no chance

Hit face early and often. They rely on Kingsbane for removal primarily. Once Kingsbane is at 3 atk, you have to start to worry about removal like doomerang and blade flurry but until that point, if you can claim and hold the board there is a lot of win potential.

If you are playing a long game, you need to deny weapon buffs from 'my mother does love this face'. Hex and silence on these is very strong. Weapon removal is really good in this matchup. Acidic Swamp Ooze gets a lot of value; don't overvalue it and consider playing it anytime against Kingsbane to deny it buffs. 

I've had fun playing miracle rogue against Kingsbane. Even into the long game you can kill them with a lot of burst if you don't win outright with a board presence.

The best way to learn a deck's weaknesses is to play with it for a while. Find out what you struggle against, and then replicate that in your play. Usually, as people have said, going wide and face is best. Vanish and Sap are temporary inconveniences, if he can't kill your stuff once, he can't again 

It is terrible. I play it and it gets destroyed by all decks faster than fatigue unless I get the perfect draw

Hit his face very much, very hard. 

HINT: N'Zoth, the Corruptor

A good resource for the OP is the meta page from HSReplays. Here's a link to the match-ups -

https://hsreplay.net/meta/#tab=matchups

FWIW - I check the stats two or three times each week, and I've found Kingsbane Rogue to be the worst-performing "popular" deck over the past year, with win-rates peaking at about 41%, and bottoming out at about 39%. The deck actually performs quite well against the current crop of combo/control Warlock and Priest decks, but its match-up against even modestly aggressive decks is terrible.

hit his face and play skulking geist before he buffs his weapon into oblivion

Depends on deck.
With Warlock, I run a 2/3 burn an enemy card, let him think he's winning and burn his weapon.
With big priest I keep getting several creatures up on the board and he can't keep up.
Hunter, Pala just rush him down.
Rogue - do massive burst, and 1-2 turn kill, he can't really counter it.
Mage - permafreeze, and so on.
Just look at it's performance in tournaments, not that good.

Acidic swamp ooze + gnomeferatu 

(When he's out of cards)

Once I switched to aggro paladin (after playing control mage) I've never lost to Kingsbane. It's pathetic under any kind of pressure.

I heard King bane rogue (mill) has 20% winrate against aggro din. Their early game is really weak.

Elemental mage so you can freeze their face