Note: This game is also known as - Sengoku Musou 2 With Moushouden

Kojiro Sasaki's fourth weapon - The quest for Kojiro's fourth weapon is in his fourth stage in Story mode. In order to unlock his weapon, you must clear 300+ kills as well as kill all Vagabonds (including any that spawn), help the Ieyasu retreat, kill Hideyori, and reach the southeastern gate within ten minutes. To do this, you will need a fast horse and a decently leveled Kojiro. At the start of the battle, clear all the Vagabonds around Ieyasu. Then, run back and clear the escape point. Wait for two more Vagabonds to appear. Kill one, which will cause at least six more to appear. Kill them, and wait for Hideyori to spawn in the southeastern maze-like area. Find and kill him, then quickly go to the southeastern gate. Musashi will appear in a short intermission sequence. A notice will then appear, showing you the location of your new weapon. Make sure to get your new weapon before killing Musashi.

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

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