Yukimura Sanada Rare Weapon - Samurai Warriors 4 II

Battle: Oshi Castle
Time limit: 12 minutes
Health: 50%
Kills: No Limit
Officer Kills: Kai and Lady Hayakawa
Allies: Infinite
Rare Weapon Mission:
5. Halt the Lion's Cubs - Prevent Ujimasa Hojo and his allies from reaching the Oshi Castle Main Keep!
Missions:
1. Water Attack Preparation
Escort Tadaoki Hosokawa and Yoshiaki Kato to the South Western Garrison!
2. Protect the Levee - 1
Defeat Izuminokami Shibazaki, Yasunaga Matsuda and Yasusato Matsuda!
3. Protect the Levee - 2
Defeat Yukie Sakamaki!
4. Ladies Together
Prevent Kai and Lady Hayakawa from Rendezvousing!
Bonus Missions
6. Fuma's Secret Maneuvers
Prevent Ninja Masters and Yukie Sakamaki from Rendezvousing!
7. Relief Efforts - 1
Defeat Tanbanokami Masaki and Yoshitake Mibu, and prevent Yoshinobu Satake from being defeated!
8. Relief Efforts - 2
Defeat Masayo Ito and Naoshige Chiba, and prevent Hideie Ukita from being defeated!
Notes: A bit of a pain because you have to prevent Kai and Hayakawa from meeting but also defeat them in quick succession because the completion of mission 4 triggers the countdown for mission 5.