(I would input a battle command, but i don`t know if i should, and god, 22 pages of Behemoth Fighting Action, memory overloaded, now let me think....)
>Can we close the gap quick enough to deal a blow?
>If yes then strike a swift slash on the creature at the most vulnerable part possible.
>If no, acquire some distance and keep an eye for what it`ll do next. Maintain your focus.
(If anything of this is dumb, disregard and leave the Pro handle it)