User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-19936604-20141022050006/@comment-11685710-20141022092834

Hidden power is Awaken/Free Element + Status attack up + elemental attack up

No idea what filthy rich does, but it sounds like a skill I'd want (always trying to collect as many sets and weapons as possible and thus broke af all the time)