Finally defeated them via tanking but I had to purchase another set of iron flesh(now 6 in total) then upgrade the black knight halberd to +5 which does surprising amount of damage(345 +133) compared to my drake sword+4 or claymore+15 but I think +5 is the maximum upgrade for the bk halberd and it's quite drainy but it was worth every shot
I don't think I have the dragon greataxe yet but after reading it's stats in the wiki
I don't think I have the dragon greataxe yet but after reading it's stats in the wiki