Finish the game to unlock the parody mode. Parody mode replaces the original text with joke dialogue. You can only perform this in the Japanese version.
The DVD that is included with the game has a secret section. It reveals secrets in the game. Enter the "Data" menu and highlight the ".hack Pro Trailers" option. Press Right to highlight a circular icon. Press X or Enter to view the secrets.
Getting easy battles
Keep powering up your Wavemasters so that you can just let them do all the work. None of them will get hurt. Make sure to have a lot of Artisan's Souls.
A Rocker Grunty requires four Cordycepts and eighteen Golden Eggs.
A Wooden Grunty requires four Cordycepts, one Immature Egg, and seventeen Golden Eggs.