Source: SB3 Utage japanese wiki
Stage appearance condition:
- Katakura Koujuurou’s story mode (Chapter 3)
- Although the stage is “Oushuu” the boss is Ieyasu (not Masamune)
- Clearing the bases in a clockwise pattern is most efficient
- Boxes (containing tigers and soldiers) will continue to fall from the sky as long as the barracks (dropped by Tadakatsu) are not destroyed.
- When all the barracks have been destroyed, the Iron Mole will appear in the veggie field (lower right-hand corner of map).
- However if you destroy all the bases, the Iron Mole will disappear.
- Defeat the Iron Mole
- Achieve 1000 kills
- In the veggie field where the Iron Mole appears (lower right-hand corner), on the upper left corner of the field (near a launchpad)
- To the right of the stage starting point (there is a secret passage between the starting point and the base on the right? “隠し通路の手前の陣の辺り。スタート地点と陣エリアの間あたり”)
- At the launchpad in the leftmost base