To unlock the EX ending artwork, finish Arcade mode with the respective EX Character.
Fight EX, Gold characters in Arcade Mode
Hold down the corresponding button while highlighting Arcade Mode and press Circle.
Code - Effect
Hold down L1 - Fight against Gold Characters
Hold down L2 - Fight against EX Characters
Note: You can't use Gold or Shadow colors if you fight against Gold Characters.
Guilty Gear Generations
To unlock the Guilty Gear Generations versions of the characters, play the game for a total of 48 hours.
GG Mode: Characters move faster, do relatively more damage, and can Instant Kill opponents without needing to charge. Bursts, Roman Cancels, and Faultless Defense are unavailable. Characters have the ability to charge their tension by holding the Heavy Slash and Dust buttons.
GGX Mode: Bursts and False Roman Cancels are unavailable. Characters can Faultless Defense Cancel their attacks.
Play as Gold and Shadow characters
Play the game for more than 48 hours. Do the following at the character selection screen. This also works for EX characters, and possibly all GG modes. (GG GGX and AC)
UnlockableHow to Unlock
Gold CharacterChange the color mode to Slash, and select your character with Dust
Shadow CharacterChange the color mode to Reload, and select your character with Dust
Special Illustrations
This is the method used to unlock the special illustrations found in Gallery Mode.
Illustration
How to unlock
Special Illustration 1
Automatic
Special Illustration 2 through 5
Beat Survival Level 500
Special Illustration 6
Unlock All EX Characters
Special Illustration 7
Unlock All Gold/Shadow Characters
Special Illustration 8
Unlock All Arcade Ending Art
Special Illustration 9
Unlock All EX Ending Art
Time released unlockables
Everything other than gallery pictures is unlockable via time release. This means time that you are playing the game, NOT time spent in the main menu, character selection screen, in between arcade matches, etc. There are normal ways to unlock these, but time released seems to be the easiest way.
Unlockable
How to Unlock
EX modes
Every hour after 48 hours, an EX character will be released. Starting with Potemkin and then Chipp, going in the same order as Survival mode.
GG Mode
48 hours of gameplay.
GGX Mode
24 hours of gameplay.
Shadow and Gold modes
Every hour after all the EX characters are unlocked or 48 hours, whichever comes last. Press D with Reload colors for Shadow, Slash colors for Gold.
Slash levels
Once all EX, and Shadow/Gold characters are unlocked and you've spent at least 48 hours a Slash level will be unlocked. Press R2 for the #R stage ver.
Unlock EX Characters
To unlock EX Characters, defeat the Shadow version of them in Survival mode. To select them, press Start on the Character select screen.
Unlock EX Characters In Survival Mode
Use any character of your choosing and defeat their shadow counterpart.
Unlockable
How to Unlock
EX Anji-Mito
Reach Survival Level 60 and Defeat Shadow Anji-Mito
EX Chipp-Zanuff
Reach Survival Level 40 and Defeat Shadow Chipp-Zanuff
EX Millia-Rage
Reach Survival Level 80 and Defeat Shadow Millia-Rage
EX Potemkin
Reach Survival Level 20 and Defeat Shadow Potemkin
Unlock Slash Stages
Play the game for more than 48 hours, and then when the stage selection screen comes up, you can select the Slash versions of all the stages.