Light Wing Dragon
Collect all twelve of the D-Units that are scattered around. There are two in each of these places - the Valley, the Desert, Uru, Uru Caves, the Forest of Zoah, and The Tower.
Solo Wing Dragon
After becoming the Light Wing Dragon, and having the Baby Dragon, return to the Forest of Zoah. Now go into the Red Ruins. Enter the central structure and find the section without a Dragon Crest. Access this to return the Crest and become merged with the Baby Dragon, creating the Solo Wing Dragon.
After having the Eye Wing Dragon, visit Shellcoof and access all of the pyramids around the ship. Enter the ship and fly to the Genesis Chamber where you find the Dragon Crest and Amrosias. Also found here is a Baby Dragon who will tag along and collect items unreachable to you. Access the Baby Dragon to receive the items.
Change Enemy Color
While viewing enemy info., plug a controller into the second port and Press Start. Now you can change the color and brightness of an enemy with different buttons.
Faster Speech in Cutscenes
During a cutscene press L or R to speed up or slow down the speech.
Tri-Burst Gun Upgrade
During the daytime, talk to Radgam the Hunter at Village of Zoah. Keep talking and he'll ask you questions - answer them correctly to get Tri-Burst for free.
Be nice to your dragon by always smiling to him, petting him, letting him sleep until morning, etc. Also give him a name at the beginning. Astral Phantoms allows your dragon to attack on its own.
Get Dyne easily.
To make this secret work, make sure your Saturn has a save file for Panzer Dragoon Zwei in its backup memory. For every hour you have played Panzer Dragoon Zwei you will get 100 Dyne when you start Panzer Dragoon Saga. Example: If you have played Panzer Dragoon Zwei for 8 hours, then you will start off Panzer Dragoon Saga with 800 Dyne.
If you have a Panzer Dragoon Zwei save on your Saturn, the little girl in the Holy District of Zoah will give you a Music box which plays the Panzer Zwei theme at Campsites.