I would like to achieve the Michael's achievment (in french "pour toi public" which could be translated as "for you, public") where you have to kill Michael with at least 4 of his minions alive.
But everytime I hit him, the damages are shared between his minions (and he takes no damage).
I have only found 2 ways to keep minions from harm: puppet master and petrification. But there's not, as far as I know, any way to make a total for 4 survive.