on no sorry for the freeze :(
The thunder will destroy all humans in that column until it hits a witch with a shield. namely everyone under the witch(with a shield) would get destroyed. And the witch would lose his shield after a hit. I know it is chaotic for the last levels and witches are not strong enough to survive long from the meteors, so you probably need to have some human on top of the witch to protect him too... Hope this would help you if you plan to try it again :p Thanks for playing!