Wow thank you so much! This is a very detailed guide for Barb run. I love Barbarian but never have a successful run with him :(. Definitely try out your guide tonight.

That is quite surprising. I thought that immune means that enemy will never take the respective damage type. Though I've heard that in D2 Resurrected, Sorceress can damage Ice Immune enemy if she can reduce enough resistance. Not sure what's going on.