My current build, what do you think?

No this build is NOT good, no block, no ar, low life.

NO well made build requires ANY points in energy.

might not need ar, if blade fury always hits, life can be fixed with no dex pts and less str, no energy

Blade Fury needs AR, but it works with ITD. So, it is possible to go with base dex IF a two handed maul can work in Hell.

The skill allocation isn't the best possible.

Looking at the skills you've maxed...

Blade Fury, Shadow Master, Venom, Fade, Blade Shield.

Blade Fury and Blade Shield do not require a high level when you have a real weapon. Blade Fury can work well with only 1 point, because the real damage comes from the weapon. adding 19 more points into it for... 100 more damage? Not worth it.

Thats what I thought at first but it was neccessary to survive in the begining, the build is going fine. I am doing NM baal runs and am surviving the windhammer is an exelent choice for the build. I do close to 2k damage now, thats not alot but add in the twisters tanks and all the other people and it works.
I am a level 76 (or 75 forgot) hardcore east ladder and I survive fine in baal runs right in the center!
My items choices were not that good but I will make the better as my build ideas progress.

You should use Soul Drainers as gloves for Dual Leech. You might want some DR with using Leviathan. Otherwise have Ironstone and SS on switch in case you get into some pretty heated battles. I advise a Holy Freeze Merc to slow the enemies down.

Thats what I thought at first but it was neccessary to survive in the begining, the build is going fine.

Lv 20 Blade Fury is not needed, because if you have the right weapon, you will be able to do well in those levels.

Fade is quite essential in Hell for the 20% DR, especially if you don't max blocking. The real problem with the items are, you don't have mods such as Open Wound, High CB and DS to aid with the killing. A better choice of weapon would be Stormlash Scourge, High damage, high Lightning damage, chance to cast static, and you can have a shield on the other hand. A Ethereal one would be much better, of course.

Soul Drainers is a great choice, not only because of dual leech, but the Chance to cast Weaken which will greatly reduce the enemies damage.

You are bringing out some good points I think i will rebuild this assasin next ladder season whenever that happens or when I die. I want to see if the one I have can be sucessfull the way it is It seems to be working soo far. I will admit that blade fury at 20 is wasted points but if you put them into almost anything else it is not a BF assasin but prolly somthing elses the only thing I can think of is putting them to fade first but I didnt need fade till I had my other skills maxed out.
I just want to keep it on the path of a blade fury assasin.
I hope the idea becomes more popular, I mean it dosent apply any specific element or damage type, Currently I do Physical, poisin, fire, cold and magic damage. The build is perfect for hell you just need the right wepon.
And tanking isnt really bad, my shadow master is godly.
Somtimes when I summon her she appears in sigon armor that still puzzles me O_o.

Shadow Master and Valk. both have random items equipped everytime you cast them, and it depends on the skill level.

Since the differences between Nightmare and Hell is huge, so your build might not work that well throughout. Also, it might be impossible to solo in a 4+ people game.

But, of course, it is not too possible to get whatever you want in the game, so sometimes the gear choices depend on what you can get.

First thing blade fury bounces from enemy to enemy, and does more damage with each bounce.
The build needs that much energy and it isnt that much it makes up for the lack of dexterity, If you dont have them energy points you cant shoot 2 3.1 mana costing blades persecond. The damage you do is not enough to take everything in the game, you need that shadow master to tank for you, I would also sedjust a merc to tank for you as well. I am able to kill anything in nightmare with my windhammer, I am still yet to test hell.
The build finsihes with more than 800 life, and with 2 people tanking for you you should have no problem staying alive if it was that bad, then I wouldnt be moving on to hell in HARDCORE.