Contra: Shattered Soldier Hints

More for this game on SuperCheats:

Completion Bonuses rating:
 
Successfully complete the game on the normal difficulty setting with at least a 'B' rank to unlock the 'Theater' option, 'Database' option, and level 5 in training mode.
 

 
Successfully complete the game with an 'A' rank to view an alternate ending sequence and unlock level 6 in training mode.
 

 
Extras:
 

 
Database - Clear game with rank "B".
 
Gallery - Clear game with rank "A".
 
Return - Clear game with rank "A".
 
Satellite - Clear game with rank "B".
 
Theater - Clear game with rank "B".