The second quest of The Legend of Zelda is what you get by having completed the game once. It is more difficult than the first quest.
In this movie, the authors enter ZELDA as the player's name to start the 2nd quest without having to complete the game first.
This movie is 4 minutes and 13.6 seconds faster than the previous movie by Sleepz. The authors provide detailed explanations of the time savings in their submission text.
You can watch this run played back on a real NES console.