Oh yeah, I remember that challenge. I think that I was with a friend, but unfortunately we both lagged like hell as a result of working together. I think the plan was something like "Let's bring one of the familiars that rezzes EVERYONE (aka Flying Bonehead of Kill = Power and Obese Red Demon of Orb-Carrying), and then if we both die, one of us will use sacrifice if necessary, and the other will spam Abuse-A-Scroll until we get Revive".
Oh yeah, Lightning storms are really good, but be careful not to area cast unless nothing can knock you into them. As much damage as they may do to enemies, Wizards cannot regenerate health and will die painfully and more quickly.