FGO Summer 2018 Event Revival (US)/Brilliant Summer Quests

Part I
Anne Bonny & Mary Read= Unlocks after clearing Chapter 4

Tamamo= Unlocks after clearing Chapter 5.

Mordred= Unlocks after clearing Chapter 6

Kiyohime= Unlocks after clearing Chapter 7.

Part II
Scathach= Clear Part II - Chapter 4 to unlock.

Artoria Pendragon= Clear Part II - Chapter 5 to unlock.

Saint Martha= Clear Part II - Chapter 5 to unlock.

Marie Antoinette= Clear Part II - Chapter 4 to unlock.