Guilty Gear XX #Reload (PSP)

Gold Shadow Forms
During Character selection, Press L three times, if for Kliff, Judgment, or Robo-Ky, once. On the third (or first for the 3 characters listed) HOLD the L.

Code - Effect

While Holding, Press R trigger - Gold Mode. Faster, and Stronger
While Holding, Press Start - Shadow Mode

How to select a stage
Only works in vs. Cpu mode(not sure if it'll work on network mode.) To select a stage just press select over one of the character's icons and a yellow square will appear over their icon. Then just select you character and begin the fight. Exa: If you push select over Ky Kiske you'II fight in Paris or if you pick Potemkin you'll fight in Zepp.