Here are some cheats and tips for the game Quackshot.
Unlimited lives:
Go to Dracula’s castle after getting the Bubble gum blaster
in Duckberg. Find the first stack of large barrels. Get the extra
life from the last barrel on the second row. Leave and re-enter
the castle to get the same extra life.
Pepper madness:
Pause game play after Donald eats a pepper. Press Up(4),
Down and resume game play.