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Death Mountain Boss

For The Legend of Zelda: A Link to the Past & Four Swords on the Game Boy Advance (GBA).

Stage: Death Mountain

From the official guide

Use your sword and shield to slash and block the creature's flame attacks. To defeat the creature, the player whose tunic matches the color of its fireball must use a sword to swat the fireball back at the creature. Your foe will explode, recompose itself, then send out another fireball attack. Use the same color-matching strategy. After the first player hits the fireball, it will change color. Then a second player—one whose tunic matches the new color—must swat the fireball at the flame creature. Repeat the steps until the foe falls at last.

The Legend of Zelda: A Link to the Past & Four Swords, The Official Nintendo Player's Guide (Nintendo of America, 2002), p. 121

Boss room

Death Mountain Boss, Boss room