Koshōshō/Weapons

Rare Weapon Acquisition

 * Stage: Invasion of Iyo

Fourth Weapon Acquisition

 * Stage: Clash at Setouchi

Fifth Weapon Acquisition

 * Requirements: Obtain fourth weapon, then buy from the Castle Mode shop for 20,000 points.

Rare Weapon Acquisition

 * Stage: Battle of Hiketa

Rare Weapon Acquisition

 * Stage: Conquest of Odawara - Invasion of Izu