ACHIEVEMENT - HOW TO UNLOCK
Kanetsugu Naoe Unlocked (50 points) - Beat Story mode with a certain character.
Masamune Date Unlocked (50 points) - Beat Story mode with a certain character.
Nobunaga Oda Unlocked (50 points) - Beat Story mode with a certain character.
No Unlocked (50 points) - Beat Story mode with a certain character.
Nagamasa Azai Unlocked (50 points) - Beat Story mode with a certain character.
Tadakatsu Honda Unlocked (50 points) - Beat Story mode with a certain character.
Ina Unlocked (50 points) - Beat Story mode with a certain character.
Sakon Shima Unlocked (50 points) - Beat Story mode with a certain character.
Hideyoshi Toyotomi Unlocked (50 points) - Beat Story mode with a certain character.
Nene Unlocked (50 points) - Beat Story mode with a certain character.
Hanzo Hattori Unlocked (50 points) - Beat Story mode with a certain character.
Keiji Maeda Unlocked (50 points) - Beat Story mode with a certain character.
Yoshihiro Shimazu Unlocked (50 points) - Beat Story mode with a certain character.
Magoichi Saika Unlocked (50 points) - Beat Story mode with a certain character.
Shingen Takeda Unlocked (50 points) - Beat Story mode with a certain character.
Kenshin Uesugi Unlocked (50 points) - Beat Story mode with a certain character.
Musashi Miyamoto Unlocked (50 points) - Beat Story mode for all but a certain character.
Ranmaru Mori Unlocked (50 points) - Fulfill certain conditions in Survival mode.
Okuni Unlocked (50 points) - Fulfill certain conditions in Sugoroku.
Katsuie (SW2)/Joun (XL) Hired (25 points) - Hire Katsuie in SW2 and Joun Takahashi in SW2XL at the Shop.
Kojiro (SW2)/Yoshiteru (XL) Hired (25 points) - Hire Kojiro in SW2 and Yoshiteru Ashikaga in SW2XL at the Shop.
Story mode - Clear Toshiie (30 points) - Clear Toshiie Maeda's Story mode (SW2XL).
Story mode - Clear Motochika (30 points) - Clear Motochika Chosokabe's Story mode (SW2XL).
Story mode - Clear Gracia (30 points) - Clear Gracia's Story mode (SW2XL).
Story mode - Clear Yoshimoto (30 points) - Clear Yoshimoto Imagawa's Story mode (SW2XL).
Story mode - Clear Kojiro (30 points) - Clear Kojiro Sasaki's Story mode (SW2XL).
Story mode - Clear Katsuie (30 points) - Clear Katsuie Shibata's Story mode (SW2XL).
Mercenary mode - Unification (35 points) - Claim victory in a Unification Battle in Mercenary mode (SW2XL).
Mercenary mode - Greatest (35 points) - Become the greatest in the land in Mercenary mode (SW2XL).

To unlock Kojiro's fourth weapon, in his fourth stage you must get 300 kills while killing all Vagabonds, help the Ieyasu retreat, kill Hideyori, and reach the southeastern gate within ten minutes. To accomplish you will need a fast horse and Kojiro must have a high level. Perform the following steps to unlock it:

1. At the start of the fourth stage, kill all Vagabonds around Ieyasu.
2. Go back and clear the escape point.
3. Kill one of the Vagabonds that appear which will cause six more to appear; kill them.
4. Wait for Hideyori to spawn in the southeastern maze-like area and kill him. Go to the southeastern gate.
5. Musashi will apppear and you will be able to get the fourth weapon. Get the fourth weapon before killing Musashi.

To view hints as on how to obtain the fourth and fifth weapons for different characters, go to "Main Menu" > "Vault Men" > "Weapon Acquisitions".