Artirtico Poison blink sounds very useful. I'm level 14 now but unlike when I normally play RPG's I still have no plan for what sort of character build I want to aim for.
I'm kinda just unlocking stuff I like, so I use the Chain Lightning attack before closing on a target with Blink and attacking with the daggers Shine and Shadow, I then blink out and hit with Chakrams for a bit. Or some combination of the above.
I don't want to go full rogue as a lot of the destiny stuff seems geared to long range attacks, and the magic to AOE attacks which I have little interest in. I do like using stealth attacks though and I did a mission rescuing a thief guy who was being held by some Gnomes, I enjoyed using stealth kills on all of them.
As you can see it's all a bit of a mess but I am enjoying it massively.