Urgoz with heroes?

2 friends and I want to do urgoz warren with 9 heroes. We read on wiki that when fighting urgoz some exploding bushes spawn and kill people that stay in one place. Now, heroes tend to stay in one location, and also ball on each other, so it seems to us that those bushes will wipe our heroes in seconds. We don't wanna start the mission to get killed in the last room after 2 hours, so I just wanted to ask if this is possible to do with heroes? If it is, then how?

Did Urgoz with 2guildies and rest were heros on nm..i was warrior..others was rit and ranger..we got basic eles/monks/mm..but remember that player must have necrotic traversal etc..at last room you just have to micro manage and move your heros..it wasnt pretty but not hard either..traps/spirits works well vs any mobs..get min lvl 14 Eoe vs urgoz..its also best if human has this.