You've been warned about spoilers, Fioras twin blades...Having a bit of trouble finding where they are? Not too interested in the end-game weapons as I know where to find them, its just the other ones such as;

Grace Blades
Utopia
Infinity
Regal Daggers
Hrunting etc etc,

Can anyone shed some light on this? For completionists sake. The google spreadsheet only tells you where the end-game weapons are, and the wiki has nothing on whereabouts.