When it comes to games for the PSP, you definitely want something that will give you plenty of bang for your buck. Thankfully, Brave Story is worth playing...and maybe worth playing again!
Unlock Enemy Details
First, clear the game and save. When you go back to that save file, you'll be able to view more details on the enemies in the game. Just check out the Monster Album in the Other menu; highlight any monster and hit X to learn valuable info.
Unlock Guest Party Members
Clear the game and save. Reload and you'll be able to play as any of the guest characters that joined up during the quest.