Here's a step-by-step way to get 99 lives in the game.

• 1.) - On the first stage, get to the stage's mini-boss, die, and lose one continue. This will start you back off in the middle of the stage.
• 2.) - Perform the "Konami Code" here on IGN Cheats.
• 3.) - Get back to the mini-boss and kill him. Then, work your way to the stage's final boss.
• 4.) - Kill the sniper enemy above the boss, and shoot the red center of the boss 49 times.
• 5.) - From here, die until you have "00" lives left.
• 6.) - Stand in front of the red center of the boss, shoot at it (for the 50th hit) and press start immediately after (practically simultaneously).
• 7.) - Perform the "Konami Code" one more time.