In-game reset
While playing hold L1 + L2 + R1 + R2 + Start + Select.

30 lives
At the title screen press Up(2x's), Down(2x's), L1, R1, L2, R2, L3, R3 on controller two. A sound will verify proper entry.

Level 6 in training mode
Be successfull in finishing level 6 during the normal game.

Level 7
Be successfull in finishing level 6 with an "A" rank.

Level 5 in training mode
Be successfull in finishing level five during the game under the normal difficulty setting.

Level 6
Be successfull in finishing level 5 with an "A" rank.

Level 7 in training mode
Be successfull in finishing level 7 during the normal game.

Database option
Be successfull in finishing the game with a "B" or "C" rank under the normal difficulty setting.

Final Boss battle in training mode
Beeat the last Boss during the normal game.

Gallery option
Be successfull in finishing the game with an "A" rank under the normal difficulty setting.

Theater option
Be successfull in finishing the game under the normal difficulty setting. Your rank will determine how much of the theater is you have unlocked.

Satellite Weapon: Finish level 5 with a "B" or "C" rank.
Return: Finish level 7 up to the credits with an "A" rank.
Triumphant Return: Finish level 7 including after the credits with an "A" rank.
Contra vs. Puppy: Finish the game with an "S" rank.