Samurai Warriors 2: Xtreme Legends - Masamune's Fifth Weapon (1/2)

The weapon: Hell's Dragons can be obtained Masamune Date's 3rd Story Stage. What you need to do is Get the cannon in place at the keep, then defeat the fake Hideyori all within 12 Minutes. Doing this will cause the weapon to spawn, but you will need to chase after the real Hideyori soon after, or he will escape. And then the battle will be lost (i.e. Game Over).