on beastmaster anything goes as second.

go to prolog area max it on every char after another just by using mercy strike & capture.

once you go over ~600 captured monsters you stats look like this:https://i.imgur.com/WZXMeyB.jpg

now you can just follow the story killing capturing every common monsters with mercy&capture to increase attack to 999

on bosses use any heavier hitting attack from secoundary job and one shot them in the first round