Help for newbie shadow

I have search for a while but didn't found a build to reference to.

I'm trying to do a poison build using the skill perforate of duality.
With 15 spikes, I think it can stack a lot of poison.
I tried dual wielding swords to block attack & spell and evasion & spell suppression.

maybe to much have been put in def but as a new player with a melee build i think it's ok.

here is the pobb(done without much thought):
https://pobb.in/oiezJnZV_Cxi

Could you help me to ajust it, please.
Or referencing me the work of someone else.