I refuse to believe the 20 second run is possible by any means. It has to be a splice. A very clean one at that.
the glitch roblox8192 performed is called a wall clip/zip i can tell you from a moderator and an 8-year Roblox player's perspective that it was a totally legitimate trick
if you'd like some context on how the glitch's performed, you align yourself right up against an edge of a wall, and if you turn your camera in the opposite direction then shiftlock/zoom into first person you either clip through a wall or zip right near the end of it
if you're still curious I perform multiple of these in my runs in a different game, Adventure Forward 2 https://www.speedrun.com/af2/run/z031vq8z
As posted in the forum, the original game is taken down. However, there is a new, reupload version of the game.
The new version of the game can be found here -
The old game can be found here -
