I generally run a spell blade sort of build, where I keep most of my martial equipment and just add frost/ember staff as a range supplement to my crossbow. I use an HP/Stam/MP balance for food as well since now that royal jelly can respawn I can easily sustain seeker aspic( the best eitr food) in my diet.

I would definitely recommend powerleveling blood magic before you fully commit to an eitr specialist build, because without a shield bubble or a tank player to keep aggro you are super squishy.