Final Fantasy 15 guide - How to unlock the 8 vault doors

Hidden away in Final Fantasy 15's Dungeons are 8 huge doors. This guide will tell you have to open them and what you get for doing it. For more from GamesRadar Subscribe: http://goo.gl/cnjsn1 http://www.gamesradar.com   / gamesradar     / gamesradar     / gamesradar