There’s an easy way to unlock all of the characters in Dynasty Warriors 7 Special, a PSP port of Dynasty Warriors 7. Put data from the PlayStation 3 version on your Memory Stick and all of the characters will be unlocked from the beginning.
Koei’s portable version of Dynasty Warriors 7 has ad-hoc support for two players. Select either chronicle mode and story mode for cooperative play. There’s a four player mode too, but it’s competitive where everyone competes to get the best score.
Dynasty Warriors 7 Special comes out on August 25 in Japan.