I used the glitch/oversight in LttP to stay with the level 1 sword. You can get around finishing the third light world dungeon/aghanim and go straight to the dark world from there.
But you need the item from the 3rd tower first.
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Never underestimate the power of stupidity in numbers. ~War13104
Never stoop to the level of idiots. They will drag you down and beat you with experience.