Guilty Gear XX #Reload Codes -

EX fighters:
By beating an EX character in survival mode, Then, hold while picking that fighter at the character selection screen to unlock the EX version.

SP fighters:
By beating an SP character in survival mode. Then, hold while picking that fighter at the character selection screen to unlock the SP version.

Fight against gold fighters:
Highlight the "Arcade" or "M.O.M." mode options, then hold while selecting it. You will fight against gold opponents in that mode.

Fight against EX fighters:
Highlight the "Arcade" or "M.O.M." mode options, then hold while selecting it. You will fight against EX opponents in that mode.

Fight against gold EX fighters:
Highlight the "Arcade" or "M.O.M." mode options, then hold + while selecting it. You will fight against EX opponents in that mode.