Melty Blood: Actress Again Cheats - PlayStation 2
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Unlock Characters
Archetype Earth Arcueid - Beat Arcade Mode with all characters.
Mecha Hisui w/ Kohaku - Beat Arcade Mode with Neco Arc.
Neco Arc Chaos - Beat Arcade Mode with Hisui and White Len.
Neco Arc w/ Mecha Hisui - Beat Arcade Mode with Miyako.
Tohno Akiha Uniform Version - Beat Arcade Mode with Tohno Akiha and Akiha Vermillion.
Play as Archetype - Earth in her Crescent Moon Style
First you need to play as Archetype: Earth in her Eclipse Style. Then select her again by using the random character option. When you finally select her she will be in her Crescent Moon Style. Archetype: Earth in her Crescent Moon Style appears to be a phototype or a beta character.
Fight Ryougi Shiki in Arcade Mode
Win at least four matches before the eighth with Perfects and without losing a match and she'll fight you after the seventh match.