Why did no-one tell me that you could kill the four-shell-claw-thing boss with just one bomb? I ran out of rupees again, and had a go in desperation with a bomb. And lo, it died in one hit. What a great big giant pair of sweaty pants.
Well, after that, Dungeon 4 was easy. Actually, it wasn’t, but I had a wander round outside, found three more heart containers, a stack of rupees, the White Sword (more powerful than my current one), and then, on my way back to the boss of Dungeon 4, I found a short cut. Since I had full energy by the time I got to him – a two headed dragon – I could “fire” my sword from a distance, killing him without losing any energy. Hurrah!
Off to Dungeon 5, and had a wander round inside (going though a “secret” entrance I found under a statue by accident). Haven’t found the map or compass yet, nor have I found the item squirrelled away in there somewhere. But I did get through quite a lot of rooms before coming across about 839427 Blue Darknuts, who swiftly killed me.