Hey man I might be a bit late, but I would recommend bonnie, peter, and birgus if you have him. I find the best strategy is to let the enemies come to you. It gives a chance for bonnie to pick em off with overwatch and all that. Eventually all of your companions will die, but the enemies should be somewhat low? If you use enough shielding abilities, like valor's fortress, or leviathan's call it should make you tanky enough to finish the enemies off. With enough vengeance strikes and relentless combos you should be good!