Forum:Cyber Darks help

I have a friend who currently runs a Cyber Dark Deck, and quite honestly it annoys the everliving crap out of me. He runs in his deck overload fusion, dragons mirror, and all kinds of cards for things like chimeratech over dragon 5 headed dragon and other really cheap cards. he also runs jinzo and horus the black flame dragon. He also very annoyingly runs eradicator epidemic virus, which he can use his cyber darks for fuel for when he equips them with hunter dragons. I currently run Crystal Beasts and I don't have the means to achieve other decks. Can anyone tell me what weaknesses they have that i can hammer on? oh yeah, and he runs limit reverse and exploder dragon >.>