Will's Archetype is automatically unlocked during lategame at September 24th. From that point, you'll be able to study Royal Archetypes for your teammates.

Remember that every Royal Archetype can only be learned by its respective user.

• Only Hulkenber can study the Royal Knight.
  
• Only Strohl can study the Royal Warrior.
  
• Only Heismay can study the Royal Thief.
  
• Only Junah can study the Royal Masked Dancer.
  
• Only Eupha can study the Royal Summoner.
  
• Only Basilio can study the Royal Berserker.

You don't need to equip another Archetype in order to master it, you can simply keep leveling an already mastered Archetype to gain one Hero's Leaf of Light per new level.

Hero's Leaf of Light is a consumable item that lets you give 1000 Rank Experience to any studied Archetype.

To unlock 'Royal Knight' with Hulkenberg, you'll need to study these two Archetypes trees and get them to a specific level:

• #1 - Knight: Level 20
  
• #2 - Magic Knight: Level 20
  
• #3 - Paladin: Level 20
  
• #4 - Dark Knight: Level 15

• #1 - Mage: Level 20
  
• #2 - Wizard: Level 20
  
• #3 - Elemental Master: Level 15

Now with Paladin level 20, Dark Knight level 15 and Elemental Master level 15, you can study Hulkenberg's Royal Knight.

To unlock Royal Warrior with Strohl, you'll need to study these two Archetypes trees and get them to a specific level:

• #1 - Warrior: Level 20
  
• #2 - Swordmaster: Level 20
  
• #3 - Samurai: Level 20 (General lvl 10 is needed for this)

• #1 - Commander: Level 20
  
• #2 - General: Level 20
  
• #3 - Warlord: Level 20

Now with Samurai level 20 and Warlord level 20, you can study Strohl's Royal Warrior.

Heismay's Royal Thief is the most convoluted Royal Archetype of all.

• #1 - Thief: Level 20
  
• #2 - Assassin: Level 20
  
• #3 - Ninja: Level 20 (Sniper lvl 20 is needed for this)

• #1 - Knight: Level 20
  
• #2 - Magic Knight: Level 10 (Mage lvl 10 is needed for this).

• #1 - Gunner: Level 20
  
• #2 - Sniper: Level 20 (Seeker lvl 10 is needed for this).
  
• #3 - Dragoon: Level 15 (Knight lvl 20 > Magic Knight lvl 10 is needed for this).

• #1 - Merchant: Level 20
  
• #2 - Tycoon: Level 15 (Commander lvl 10 is needed for this)

Now with Ninja level 20, Dragoon level 15 and Tycoon level 15, you can study Heismay's Royal Thief.

To unlock Royal Masked Dancer with Junah, you'll need to study these two Archetypes trees and get them to a specific level:

• #1 - Thief: Level 10.
  
• #2 - Masked Dancer: Level 20 (Mage lvl 15 is needed for this).
  
• #3 - Persona Master: Level 20 (Faker lvl 20 is needed for this).

• #1 - Faker: Level 20
  
• #2 - Trickster: Level 20

Now with Trickster level 20 and Persona Master level 20, you can study Junah's Royal Masked Dancer.

To unlock Royal Summoner with Eupha, you'll need to study these two Archetypes trees and get them to a specific level:

• #1 - Faker: Level 10.
  
• #2 - Seeker: Level 20
  
• #3 - Magic Seeker: Level 20
  
• #4 - Soul Hacker: Level 20

• #1 - Summoner: Level 20 (Seeker lvl 20 is needed for this).
  
• #2 - Devil Summoner: Level 20 (Magic Seeker lvl 20 is needed for this).

To unlock Royal Warrior with Strohl, you'll need to study these two Archetypes trees and get them to a specific level:

• #1 - Warrior: Level 10.
  
• #2 - Knight: Level 10.
  And with these two you can get the Berserker Archetype.
  
• #3 - Berserker: Level 20.
  
• #4 - Destroyer: Level 20.

• #1 - Brawler: Level 20
  
• #2 - Pugilist: Level 20
  
• #3 - Martial Artist: Level 20

Now with Destroyer level 20 and Martial Artist level 20, you can study Basilio's Royal Berserker.