View FMV sequences:
Start "The Making Of Lunar: Silver Star Story Complete" disc. Then, press Up, Down, Left, Right, Triangle, Start when the FMV sequence of the creation of the game starts. Then, swap the disc with either of the other game discs to view all FMV sequences on that disc.

Lords Of Lunar mini-game:
Start "The Making Of Lunar: Silver Star Story Complete" disc. Then, press Up, Down, Left, Right, Triangle, Start when the FMV sequence of the creation of the game starts. The mini-game resembles ping-pong with Lunar characters.

Getting Chira's Tail:
Try to kill at least twenty Ice Mongrels before they run in the Trial Cave. Chira's Tail can be found after one of those battles. It gives Defense +2 and Agility +10.

Getting the Hell ring:
Visit Damon in his spire before you go into the Grindery. It will reduce your MP use by half.