i've been trying to speedrun all achievements but i don't know how to get On A Rail can anyone help me?

it's hard to explain so look at end of the current ssg runs. Both ssg run solved it with accepted glitch. It basicly going with bot, not a minecart. If you don't understand with current runs, you can ask again. I will try to explain with more details.

i tried that but it didn't work maybe i just didn't went far enough but idk
thanks anyways ^^