Half of them are obtained just by playing through the story, but the rest are optional. I’m going to go over where to find each Royal Arm, and the stats so you can decide which you want to use.
This guide will go over everything about Royal Arms in Final Fantasy 15 including:
Royal Arms Info - Brief info on Royal Arms and what they do. Royal Arms Locations - Where to find all 13 Royal Arms. Royal Arms Stats - The stats of each Royal Arm.
Royal Arms Info
The Royal Arms are weapons only Noctis can wield, and don’t always fill one of the other weapon types in the game. For example there are Bow and Throwing Star Royal Arms.
You lose HP each time you attack with a Royal Arm, but it is a small amount. You will want to keep an eye on it though because you could end up killing yourself if used at low health.
Each one also gives certain benefits, such as increased resistances or high attack power. They could also give other drawbacks such as slow speed, or reduced resistances.
Royal Arms Locations and Stats
Sword of the Wise
First one when you first meet with Cor.
Stats
Attack: 194 +100 HP +30 Vitality +30 Magic +30 Spirit
Deals extra damage with preemptive warp-strikes.
Axe of the Conqueror - Tomb of the Conqueror
Required right after getting the Sword of the Wise.
Stats
Attack: 483 +60 Strength -80 Vitality
Very high damage, but slow and lowers defense.
Swords of the Wanderer - Waterfall Cave Dungeon
This dungeon is required as you go through the story.
Stats
Attack: 153 +50 Vitality +50 Spirit
Attacks with multiple swords.
Blade of the Mystic - Right before Titan Trial
Stats
Attack: 396 +150 HP +30 Vitality +20% Dark Resistance
Scepter of the Pious - Malmalam Thicket
This is an optional dungeon near Old Lestallum.
If you are going through the story, your party will ask you if you want to stop there while you are on a drive. You will be able to go back at anytime.
Stats
Attack: 237 +150 Magic +50% Dark Resistance
Katana of the Warrior - Mine after the Leviathan Trial
Stats
Attack: 361 +100 Spirit +25% Fire Resistance +25% Ice Resistance +25% Lightning Resistance +50% Dark Resistance
Trident of the Oracle - Given to you by Shiva during the story
Stats
Attack: 388 +60 MP +30 Vitality +30 Magic +30 Spirit
Makes illusions with each attack.
Sword of the Father - Get automatically during Chapter 13
Stats
Attack: 141 +100 Strength +100 Magic
Star of the Rogue - Myrlwood
This is southwest of Vesper Pool. Vesper Pool is to the northwest of your map. A level 38 Treant blocks the path to the tomb
Stats
Attack: 177 +20% Fire Resistance +20% Ice Resistance +20% Lightning Resistance
Weapon is thrown in arcs to the left and right.
Mace of the Fierce - The Rock of Ravatogh
This is a dungeon to the far west on the map.
Stats
Attack: 334 +300 HP -50% Ballistic Resistance
Bow of the Clever - Balouve Mines
This is a dungeon in Liede, the starting area, but you won’t be able to get it at the beginning. There are high level enemies ending with a level 52 boss. You can find this dungeon south of Hammerhead near the road to Galdin Quay.
Stats
Attack: 203 +80 Magic +50% Ballistic Resistance
Attack from range.
Greatsword of the Tall - Costlemark Tower
This is a dungeon that’s southeast of Cauthess in the Fallgrove. You can only enter this dungeon at night. A level 58 boss blocks it.
Stats
Attack: 518 +200 HP -30 Spirit -40% All Elemental Resistances
Shield of the Just - Thommels Glade
This is an area that’s west of Cauthess. There is no dungeon or anything.
Stats
Attack: 251 +1,000 HP -50 MP -100 Strength +200 Vitality +10% to all Resistances
That’s all of the Royal Arms in Final Fantasy 15. Now you can try them all out for yourself to see which you like the best. Let me know if you have any questions!