when he clones thats the hardest move to beat.. most people say to go for him but i actually like killing the clone first, it dies easily. only problem is he clones again sometimes.
the way to tell which is which: put your mouse over him, his life will appear at the top along with Baal. under that is Demon (his class). the one where the D in demon is directly under the b in baal is the clone, and if its a little to the right its him. please fix me if i got it backwards.
bring plenty of mana pots, he doesnt do too much damage but his mana burn move is pretty mean.