so basically if you jump from a square box and glide long enough gravity breaks and becomes like the outside of the tunnels and you can press a side key to go in a straight line, and you can let go to glide into things or out of the map (it will still respawn you if you go out of the map)
playing on player03.com/run/3/beta, so its a beta and its the new html version so yeah
as of 12/21/2022 this works
oh also you need the child for this