Bad ending
Complete the game with exactly zero dollars to unlock the bad ending.
Bonus Stage
When your score has a 7 as the 10-thousands digit(for example 170,000), call Launchpad to take you back home; he will drop you off at a secret bonus stage.
Extra Hit Point
At the right extreme of the second floor, there is a large coffin which is marked "R-I-P". Cane jump on top of that coffin and you can walk through the right wall, which happens to be an illusionary wall. On the other side of this wall there is a chest, which contains the extra hit point.
Refill Your Energy
If you have 3,000,000 in your total, you can refill your energy anytime by pressing Select. Each time you press Select, you will consume that amount.
Second Extra Hit Point
For the second Hit Point, move right across the level, until you reach the first pit. Jump down this pit and keep falling until you reach the bottom floor. Just move left until you reach Bubba. To save Bubba just hit the block underneath him with your cane and cane jump from the block to above the ice, which intraps him. He shows you a treasure chest, which contains the second extra hit point in the game.