Unlockable - Completion bonuses | |
| Theater | Complete the game with a B rank. |
| Database | Complete the game with a B rank. |
| Level 5 (Training Mode) | Complete the game with a B rank. |
| Alternate Ending | Complete the game with an A rank. |
| Level 6 (Training Mode) | Complete the game with an A rank. |
| Level 7 (Training Mode) | Beat the game. |
| Gallery | Complete the game with an A rank. |
Secret - Unlock a Hilarious Movie in Theater | |
| Complete the game on ''Normal'' difficulty with an ''S'' ranking. This is very tough to do. Once you received an ''S'' ranking, the hilarious movie will be available in ''Theater'' mode in ''Etc'' mode. View the movie to see something really hilarious. | |
Secret - Theater Option | |
| Successfully complete the game under the normal difficulty setting. Your rank will determine how much of the theater is unlocked. Satellite Weapon: Complete level 5 with a ''B'' or ''C'' rank. Return: Complete level 7 up to the credits with an ''A'' rank. Triumphant Return: Complete level 7 including after the credits with an ''A'' rank. Contra vs. Puppy: Complete the game with an ''S'' rank. | |
Password - Start with 30 lives on Normal Difficulty | |
| Enter at the title screen on the second controller: | |
| 30 Lives on Normal | Up, Up, Down, Down, L1, R1, L2, R2, L3, R3 |
