Need help with D/D please
You should probably look into Jinzu’s Backstab build then. http://www.youtube.com/watch?v=-udk3CEtc7E
Combo with Bailisk > Preload CnD > Steal > CnD goes off, doing damage and stealthing you > Assassin’s Signet > Backstab.
Or look into Neakz’s Backstab build as well: http://www.youtube.com/watch?v=f40ZxsOVVcY
Prefer closer to Jinzu’s combo, but Neakz’s utilities. Haste, Assassin, and Skale just leaves no room for survivability utilities. I’d play around with both of those builds, and see what you like. Practice the string of attacks on the training golems till you get used to it, and go into PvP. Then start playing with the build further and see what you like.
I run 25/30/0/15/0 myself. I liked Jinzu’s combo, Neakz’s choices of utilities (but most of the time I swap out Shadow Refuge for Shadowstep). However I felt that sometimes I’m just no fast enough to catch up to someone while stealthed, so I tweaked it for swiftness + an extra dodge roll to catch up and backstab. Hope that helps.