Here are some cheats and tips for the game The Adventure Of Link.
Start at second world:
Enter ZELDA as a name to begin at the second world.
Quick experience points:
Complete the first quest, then go to one of the palaces during
the second quest. After he has placed the crystal in the statue,
his experience points will quickly increase. While this is occurring,
press Up + A on controller two. Select the save
option and then resume game play with a new character. This new
character will also gain experience points quickly.
The Final Guardian:
Go to the left side of the screen and rapidly tap B
when fighting your shadow character.