This article has a useful king list and discusses the collapse of the Hittites in the Late Bronze Age.
http://www.biblicalarchaeology.org/daily/ancient-cultures/ancient-near-eastern-world/the-last-days-of-hattusa/?mqsc=E3841236&utm_source=WhatCountsEmail&utm_medium=BHDWeek%20in%20Review%20Newsletter&utm_campaign=E6W702