Guilty Gear Judgment (PSP)

Anji Mito
Complete level 3-2 With Slayer.

Axel Low
Complete level 3-1 as Chipp Zanuff.

Baiken
Complete level 2-1 as Millia Rage.

Bridget
Complete level 2-1 as Ky Kiske.

Chipp Zanuff
Complete level 2-1 as Sol BadGuy.

Dizzy
Complete level 2-1 as May.

Eddie
Complete level 2-1 as I-NO.

Faust
Complete level 4-1 as Sol BadGuy.

Jam
Complete level 3-2 as Potemkin.

Johnny
Complete level 2-2 as Dizzy.

Potemkin
Complete level 3-2 as Bridget.

Slayer
Complete stage 2-2 as Millia Rage.

Testament
Complete level 4-2 With May.

Unlock Judgment in Judgment Mode
To unlock the character Judgment in Judgment (story) mode, get to level 6-1, and find all the letters of Judgment, hidden in various chests scattered throughout the level.

Venom
Complete level 3-1 as Eddie.

Zappa
Complete level 2-2 as I-NO.