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.

Use Yukimura Sanada (Adult) in a castle town.

Use Yukimura Sanada (Child) in a castle town.

Make yourself a casserole...

Activate the sixth teleporter.

Activate the final teleporter.

Activate the third teleporter.

Find and repair all of the Junkyard King's broken robot minions.

Activate the second teleporter.