I'm not gonna' spoil my own stats, but in the tower of Gaan-Telet, you go through waves of level 10 monsters that aren't bosses, but the actual boss has 5000 hp, 45-75(?) damage, 50% resist all, and mana burn... Have Fun!
We made an expansion and it is awesome. Really, you should check it out, especially if you're looking for some extra challenge.
Download over at ddmod.weebly.com!