Here are some cheats and tips for the game Tales Of Symphonia.
Completion bonuses:
Successfully complete and save the game, then reload the cleared game file. The
“Game Record”, “Sound Test”, and “Mania” options will now be unlocked at the
title screen. Also, go to the Grade Shop to access new items.
Fight against Aviation:
Get all nine Darkness Weapons and go to the Darkness Temple to fight Aviation.