Get a S or above ranking for Maiden's Gerek (mission 7) and Nightmare assault (mission 15) to unlock EX versions of those missions.
Macross Frontier EX Mission
Get a S or above ranking for Miss Macross (mission 8) and Friendly fire (mission 10) to unlock EX versions of those missions.
Macross+ EX Mission
Get a S or above ranking for Dog Fight (mission 12) and Song of angel(last mission) to unlock EX versions of those missions.
Super Dimension Fortress Macross EX Mission
Get a S or above ranking for Longest Birth day (mission 9) and Pine Salad (mission 15) to unlock EX versions of those missions.
Various Codes
Choose the "Setting" option at the hangar. Then choose the "Auto Save/Password" option and enter one of the following passwords to activate the corresponding cheat function.
All Zentradi Arms EX mission
Enter EHIAR as a password.
Do You Remember Famitsu? EX mission
Enter LAMGV as a password.
Super Dimension Gladiators Dengeki EX mission
Enter IGYSU as a password.
Generation Drive EX mission
Enter KSALE as a password.