Can confirm its a complete nightmare with cleaver build and I reorganized to only have main / few cleavers to get triggered before this fight to not wait forever.
I'm not sure what exactly you've used to deal 2 hits in one turn, as I said weapons with vampirism miss the main hit and deal damage from vampirism but thats pretty much all that goes into my head. Although I kinda remember on some multiattacking build I've seen like 2 hits out of bunch hitting the boss. My best guess is that pure vampirism weapon (there is dagger with just 2vamp and self-poisoning halberd) may remove dodge without triggering next one? Because around that time I was rocking Shield Spirit setup with one of my weapons being that vampiric dagger:)
As for the scratch, I never really used it so not sure how this one interact with boss dodge mecnahics. Should actually try it next time I meet him:)