Level select
Press [Right], [Left], [Right], [Left],
[A], [B], [A], [B] at the title screen, after
Higgins gets hit by the coconut,
Continue
Enter the left cave in the first stage of the third
level of Fern Isle. Continue game play until reaching the fourth
skull. Jump up and down to find a bonus room and collect the "Hudson
Bee". When game play ends, hold [Left] and press [Start]
to continue from the last stage with all items.
Extra items
Enter "0894" as a password for 99 of each item.