Once you complete the game (get all DK coins and bonus coins) you can accsess the time trial. All you do is select a game at the main menu and the time trial will come up. To just play normally, select play.
1st Land Boss Hint
If you have been having trouble with the first land boss, here is all you need to do. When you turn into a sword fish the enemy will fire the fist shell, It will chase you about, but very slowly and its not really a problem. When it stops and starts opening and closing, while it is open, ram it towards the boss and it should hurt him. Then quickly go to the bottom right hand corner and you will be out of range of his triple shell shot. Repeat these actions until he is dead!
All levels completed
At the title screen press Left(2), Up, Down, Right, Left(2), Down, Up, Right, Left(2), Up, Down, Right. You should then hear a sound to confirm correct code entry. Now open up a saved game and all levels will be marked comleted, with the exception of bonuses.
Play the "Total Recoil" level in the "Cape Codswallop" world. Collect the extra life in the bonus stage, intentionally lose the present life, and repeat.
Unlimited bear coins
Complete the "Lift Shaft Lottery" in the Cape Codswallop world. Enter it again, move left and collect the bear coin. Press Start + Select to exit the level, then replay the level to collect the coin again. Repeat this to collect as many coins as needed.
Leave previously completed levels
Pause game play, then press Start + Select.
Sheepy Shop mini-game
Press Up(2), Down, Left, Right at the title screen. A sound will confirm correct code entry. Begin game play to start the Sheepy Shop card matching mini-game.
Hold Start + Select and press A + B.
Press Down(2), Up, Left, Right at the title screen. Note: This code has no effect in time attack mode.