Spider-Man 2 Completion bonuses
Successfully complete the game to unlock the all moves and level selection options.
Defeating Reptile
Sneak up to him while crouched, and get close but just enough so you can barely hit him with your punch. Reptile will stay in one location for an easy win.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art.