Donkey Kong Land 2

Forty-seven Kremkoins:
Highlight any saved game at the file selection screen. Hold Left or Right and quickly press A, B, A, B. A sound will confirm correct code entry.

Forty Banana coins:
Highlight any saved game at the file selection screen. Hold Left or Right and quickly press B(2), A(2). A sound will confirm correct code entry.

Forty-seven lives:
Highlight any saved game at the file selection screen. Hold Left or Right and quickly press A(2), B(2). A sound will confirm correct code entry.

Leave previously completed levels:
Pause game play, then press Start + Select.

Delete saved game:
Press Start + Select at the load game screen.

Hint: Easy lives and Banana Coins:
Once you finish the first level, keep going to it and get everything all over again.
Information in this section was contributed by Ped Watson.

Hint: Easy Banana Coins:
Go to Krazy Koaster. Turn left at the very beginning. There should be two Banana Coins in the air. Jump up and get them. If you have already completed the level, press Start then Select to exit the level. Repeat this as many times as needed.
Information in this section was contributed by BeBop007.

Glitch: Enter bonus section without cart:
Go to Krazy Koaster in Gloomy Gulch. Have Dixie first and Diddy in back. Use your fly thing to go as far as possible. If done correctly, you should land on the track next to some bees on an uphill track. Continue to run with Diddy Kong and jump on a floating track while you are still invincible. You will enter the bonus without the cart.
Information in this section was contributed by KoopaKid16.