The more you collect, the more powerful armiger becomes, and Armiger can really help in those late-game battles and post-game quests. These weapons are also those that Noctis summons when he activates his powerful Armiger move, however. Well, these hugely powerful weapons constantly drain your health when in use and so should be used sparingly. On this page, we detail the Royal Arms Locations, letting you know exactly where to find each. During the course of Final Fantasy XV's main story you'll be introduced to a set of powerful weapons called the Royal Arms - and you'll definitely want to grab them all as part of your quest, though that isn't straightforward.