Okidoki
Are you aware of "Elephant in the Room" rules for feats?
No biggie
The Vendetta and my god sending me out to kill his targets is a side-effect, I am not playing a one-trick-pony story-wise.. , Also, story-wise, he only just became undead, so he doesn't know all of what he can do/ immunities he has, so I will be playing him that way, as if he is still human. And Hp, he doesn't have an endless amount of them, so, even with fast healing, he won't be wading into combat frontline to soak up all the hits..
Read his fluff, and this might help understand moreso how I'd play him.
You did say initially one can be anything, hence my application..