The Legend of Zelda: Overworld & Dungeon 7: Demon Labyrinth
1Looks that that before beating Dungeon 6, I was one Heart away from being able to gain the Magical/Master Sword. This is the second, last, and strongest sword you can get in the game.
Dungeon 7 has an enemy that acts like a old man or woman, since he doesn't let you through until you give him some Meat or Food. I completely forgot about this and had to go out of the Dungeon just to get that. Without it, I can't beat this.
There's more minibosses, here: Two Digdoggers and two trios of Dodongos. This Dungeon contains the Red Candle item. It's an upgrade of the Blue Candle where you can launch as much fire as you want in the same area.
The main dungeon boss is once again the first boss, Aquamentus. He's not that hard to beat this time, as he still has his same amount of health. This isn't good for him since I (and if you followed this well, you) have the best sword at this point.