Talk to the guard of the run-down Vault.

Increase Yukimura Sanada's Rage intensity to Level 5 in battle.

Give Sakyō Raifukuji several conch shells.

Acquire 100 different materials.

Achieve 1,000 K.O.s in a single battle.

Attain a total K.O. count of 10,000.

Raise Yukimura Sanada's level to 50.

Read 50 entries in the Sanada Clan Chronicles.

Raise your weapon rank to "A".

Raise your Friendship Level with another officer to max.

Acquire materials at the Farm.

Achieve an "S" evaluation in battle 10 times.

Acquire 26 different battle accessories in battle or while exploring.