If you look at the spacebar map in final dungeon, you will get a message saying "Before the stubborn village gate show completion and conquest when the 14 points are lit the gate shall glow play the sounds in numbered order awaken the superboss almighty autimecia. You also see a screen full of letters that might or might not mean anything. Then you see 06, 74, 31, 44, 61, 57, 04 she awaits.
Well, I think I got the first part done because I have 100% item completion, or at least that is what the game tells me. Can you hold more than 24 bombs?
I'm not sure that 14 points need to be lit. I do know in the bossrush there are the 7 sins and the 7 heroes. Before a boss is defeated, their square are blank. Now there is a picture on every square except for the very top middle. This makes me think that the 14 points are lit. The gate, however, does not glow. I think this isn't what the 14 points are.
Is there where else in the game that might represent 14 points?
I think I can figure out the playing the sounds in numbered order. Link has a ton of items that play different sounds. So I just have to figure out what items link to what sounds.
06
74
31
44
61
57
04
I assume each numbered is linked somehow to the sound effect an item makes, so i just have to figure out what item represents what number.