Yup, the monk sucks hard at magic bosses (hello 145 damage aequitas, or 60% resist tormented one!
). What's funny is, in my case anyway, I have less problem dealing with Bleaty as a berserker than as a monk. Oh the irony!
Also, as already stated, this game is not low damage friendly: more hits taken = more debuffs.
So far, my strongest monk was an elf of mystera with crystal ball.
EDIT: sorry for hateful posts, I just can't stand the current state of the monk: too many holes in his gameplay. He sure could use either a lesser attack penalty or some magic resist.