Gufu Custom
Play the game in story mode. In Chapter 7, have Gundam Ez8 fight against Gufu Custom, then in Chapter 13, have Gundam Ez8 fight against Apsalus. Gufu Custom will be available in Chapter 14.
Talgeese
Play the game in story mode. In Chapter 9, have Wing Zero Custom fight against Talgeese, then in Chapter 12, have Wing Zero Custom fight against Epyon. Talgeese will be available in Chapter 14.
Alternate Hisatsu
Get Dancougar's and Raideen's Shooting skill to +4 or greater.
Hard Mode
Successfully complete story mode.
Extra Mode
Successfully complete story mode under the hard difficulty setting.
Trial Mode
Successfully complete story mode under the hard difficulty setting.
Saved Characters In Trial Mode
Successfully complete the game in story mode and save it. Load the saved game file, then watch the ending again. Select trial mode, and all characters unlocked in your save will be available for selection.