Shadow Nightmare
CAUTION: Spoilers!
Nightmare:
These beasts are the cause of all the problems in Link's Awakening There are five of them:
Shadow Gel: This little guy is not as easily killed as a real gel. To eliminate it, sprinkle Magic Powder on it, and it will become vulnerable to your sword.
Shadow Agahnim: Agahnim returns! To eliminate him, reflect his shots right back at him.
Shadow Ganon: This is as easy as Ganon will get. So be happy. Use your Pegasus Boots to ram him to death!
Shadow Gloworm: I have to break it to you: This guy is easy. Slash.
Shadow Deathl: The final Nightmare. And boy, is he a nightmare. His arms constantly rotate around him. And there are 2 ways to kill this shadow and win.
A) Shoot him in the eye with about 20 arrows.
-OR-
B) Hit his eye about 3 times with the boomerang.
Take your pick!