User blog comment:Fijibuffman1925/What Happened to the Hook Blade?/@comment-13471981-20140706204939

All I know is that Ubisoft did not include the hookblade in AC4, precisely because the "pirates having hooks for hands" is an inaccurate cliche. Perhaps the hookblade remained something isolated to the Ottoman Assassins? Or, if it was passed on, maybe it didn't make it to the New World, where we have been spending our time in recent games.