Every character in the game has a default costume and an alternate costume. To access the alternate costume, simply go to the character selection menu. Select your character and press the Circle button. This should change the character’s costume into its alternate form. To switch it back, simply press Circle again.

To unlock the following characters from Samurai Warriors, fulfill the requirement listed.

• Kotaro Fuuma - during Wei Story Mode, kill him after all of the supply troops have reached headquarters in chapter 2x
• Lady No - stop all messengers from leaving the map in Wu Story Mode (chapter 3x)
• Mitsunari Ishida - complete the second stage of the Wei Story Mode
• Nene - during the Wei Story (chapter 3x), eliminate the Nene Clones within four minutes of their initial appearance
• Nobunaga Oda - default character
• Oichi - complete the Wei Story Mode
• Okuni - complete the third stage of the Wei Story Mode

To unlock any character’s fourth weapon, try to obtain weapon boxes on stages which have three or more stars available on Hard or Chaos difficulty level. The availability of weapons will be random, but this appears to be the only way which you will get them.

Most movies in the game become unlockable to view at any time rather easily. The Intro sequence and the Credits sequence can be unlocked simply by starting to play through the game. What's more, you can see the ending sequences for any of the main characters by completing their story in its entirety.