(This is hardcore btw) Had some trouble against a psn bow barb that does some decent ww damage (can nearly 3-4 shot me with 900 bone armor active). Any advice (this is bm duel) as a bone nec to counter this?

Use summons and revives

Drink antidotes before and during the duel, anti psn gear

Use max block

Use decrep with holy freeze merc and clay golem slow

Use summons/revives

Lure him into monsters and cast iron maiden as he whirls

Etc.