Image: Sucker Punch Productions / PlayStationOfficial screenshot from Sucker Punch Productions / PlayStation.
Quick Study is a progression trophy for learning all four basic combat stances. Each new stance comes from observing or killing Mongol leaders.
Find Mongol leaders in occupied areas. Watch them or kill them to earn the points that unlock each stance. Once Moon Stance is learned, the trophy pops.
You start with Stone Stance, so you need three more. The Ghost Stance from The Ghost of Yarikawa is separate and does not count.
Image: Sucker Punch Productions / PlayStationA Charming Man
Equip a charm in all 6 slots.
Image: Sucker Punch Productions / PlayStationEvery Trick in the Book
Unlock every throwable Ghost Weapon.
Image: Sucker Punch Productions / PlayStationThe Benefit of All Beings
Raise your Iki Island Legend to the title Legacy Redeemer.
Image: Sucker Punch Productions / PlayStationThe Ghost of Legend
Raise your Legend to the title Ghost of Tsushima.