Bosses in A Link to the Past

Helmasaur King:

The Helmasaur King is the boss of The palace of darkness. To defeat him you need the Magic hammer. First he will attack with fireballs or his tail.He is wearing a mask which you have to destroy. Use the Magic hammer on his mask and hit him a couples of times to destroy it. When his mask is destroyed he will reveal his face. He has a glowing ball in his face which you have to hit with sword or other strong weapons. When he is defeated, he will drop a heart container and the first crystal.

Now you have defeated the first boss in the dark world!

Congratulation!