Unlock all five normal endings. A special prologue willappear, allowing you to play again and unlock the "Extra"ending.

When the game is completed, one of five endings will appear.An "Extra" option will now be available at thetitle screen, which allows you to view the percentage completedfor every chapter. You can also start the completed gameover again at the beginning to try to do better and geta different ending.

Successfully complete the game to unlock a FMV sequencefrom the Spring 2000 Tokyo Games Show.

Successfully completethe game after getting three different endings to unlocka FMV sequence from a private Konami game show in Europe.Successfully complete the game after getting all five normalendings and the "Extra" ending to unlock a FMVsequence from the Fall 2000 Tokyo Games Show.

If you begin running out of energy units, allow yourselfto die. The moment you are brought back to life, you willget an energy unit for free. For example, if you let yourselfdie five times in a row you will get five energy units forfree. Do this trick each time you begin a new chapter.