WARNING: If you use "Clean Slate" you will loose the stat points gained by potions from the Legendary potions (either +5 str/end or dex/int). I just did and lost 10 stat points :(
100k+ critical hits with Vampire Reaper lvl 303. 30-40k regular hits. I completely heal every hit from vampire drain, and everything dies from 1 REGULAR hit (note that I dont even need to use crit.) Weapon is: 757-582 base. Remember that you heal 1/6 each hit! 6.4k hp/1.4k mana. 1070 armor, 110 cold resistance, 1193 strenght, 40 stamina, 13 will, 13 int. Getting kinda boring! This is the first guy I beat lvl 15 with! It was like my 20th try. Spent +2/+2 on str/stam the first 15 levels, then just +4 strenght. I tried going +4 str from lvl 1 but then I just ended up dead cause I lacked hp when around lvl 12-17. KEY POINT: get 100 Ice resistance as soon as you can. Also 100 fire resistance will help until lvl 30+ when it wont matter anymore (cause fire doesnt scale). At the level I am at now the ice knights does 2148 Ice damage / hit! Anything less ten 100% resistance and you will have a stressful time.