User blog:Unmei Suiheisen/Abyssal Vortex help

I really want Cuniali maxed but it seems pretty hard to acomplish something in the Abyssal votexes, is there somthing i dont know about how to be efficient there? if there is can someone please give me a link to a guide or explain in brief explenation how to get a character who has boost to its stengh instead downgrade please?