Bounty hunter.
This evening, I was killing assailants and alpos for the bounty hunter. I had a count of 584/1800 when I started. I used 20k worth of hero stenima and 14k of Adrian energy. By the time I was done. Final count I ended up is 588/1800. It did not add what I killed. It don't take that much stenima to kill 4 . Out of your hero being lvl 62 and with the right gear. Same for adrian. He is at lvl 50.