Samurai Warriors 2:XL - Nagamasa's Tale 4 - Showdown at Shizugatake (360)

This is a what if where Nagamasa goes on to conquer Japan. The Asakura can actually betray you here if Nene gets to them. I almost wanted to let it happen just to get to kill them. You have 4 commanders to defeat, 3 of which appear as you meet Hideyoshi so it's best to clear out the rest of the map before then.