Miscellaneous Bonuses!
Unlock the other bonuses by doing the following:
Return - Clear game with rank "A"
Gallery - Clear game with rank "A"
Database - Clear game with rank "B"
Theater - Clear game with rank "B"
Satellite - Clear game with rank "B"
Beat the game with an A ranking to get an alternate ending and unlock Level 6 in Training Mode.
Beat the game with a B ranking to get Level 5 in Training Mode, plus the Theater and Database options.
Unlock more stages in Story Mode by doing the following:
Level 6 - Clear level 5 with rank "A"
Level 7 - Clear level 6 with rank "A"
Unlock more training stages by doing the following: Level 5 - Clear level 5 on normal.
Level 6 - Clear level 6 on normal.
Last Boss - Kill last boss on normal