Contra: Shattered Soldier

30 lives:
Press Up(2), Down(2), L1, R1, L2, R2, L3, R3 on controller two at the title screen. A sound will confirm correct code entry. Note: This only affects your first credit. Your remaining credits will all have the default number of lives.
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In-game reset:
Hold L1 + L2 + R1 + R2 + Start + Select during game play.

Level 5 in training mode:
Successfully complete level five during the game under the normal difficulty setting.

Level 6:
Successfully complete level 5 with an "A" rank.

Level 6 in training mode:
Successfully complete level 6 during the normal game.

Level 7:
Successfully complete level 6 with an "A" rank.

Level 7 in training mode:
Successfully complete level 7 during the normal game.

Final Boss battle in training mode:
Defeat the final Boss during the normal game.

Gallery option:
Successfully complete the game with an "A" rank under the normal difficulty setting.

Database option:
Successfully complete the game with a "B" or "C" rank under the normal difficulty setting.

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.