The main quest completion time has been shortened to nearly one sixth of what it initially was, thanks to the discovery of a glitch that allows Juste to sink into walls.
This is a 2:51.64 minute improvement over the previous movie.
The author has created an elaborate encode that shows the player's position on the map, contents of the game's memory, and hacks the camera to follow the character's movement more. It is available on YouTube, NicoVideo, and Bilibili.
However, if you still think there is not enough zipping through walls, be sure to watch the second quest completed in less than half a minute!