Also beta, I see. But that's good, it makes me feel better about my own run! (Isn't the new layout so much more enjoyable for early-game AoB?) Moreover, VERY impressed by the Blademaster victory. It's believed that the best use of MBm is in N! due to double healing, and this only helps confirm the belief.
I also did/completed Mort, by the way. Turns out all my Viles were on the same side...
I guess a logarithmic chance would work, but that doesn't address the "issue" of perma-zerk, which makes these kinds of runs practically trivial once you get to the point of slaughtering anything in your path. Better yet, there should be diminishing returns per activation. The first is something like 20 right now, but you could have the next 19, then 18, etc, until it's just one per activation. This will force times of non-zerk, which truly tests the player. (Berserk Packs won't be diminished, however, and could possibly reset the diminish.) If anything, Blademaster would be hurt LESS by such a change, because it uses less "time" while zerked.
For Kornel: the Scythe requirement is currently bugged, if this (and my own) run has anything to say about it.