A proper vampire is invincible :)
Build 50 fire resist, 100 cold resist, and as much armor as you can, with the highest damaging sword. Early levels 2 str, 1 sta (I stopped after 100), 1will (until you can spam 3-4 charm), later only str. You will be able to one-hit everything, heal fully with 1 hit, and get almost no damage (everything stops at about 50 damage except for the cold knights, but with 100 cold res they do 0 dmg)
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