I have a good list of demons you cvan beat, start with platinum adventure than move on to a medium demon called B if you cant find it just put the medium demon filter then beat ultra violence(medium demon) then for a hard demon if you wanna step it up go for darkness keeper and for a insane go for stalemate and for extreme i reccomend misty mountains or cataclysm they are both good maybe acu(you dont have to play these just try them out)