I was wondering how do you get passed a locked door during the speedrun Alexkaboom, as for example in level 6, I believe, through the blue key door. Seems like you're shifting to Shift lock rapidly then back to normal movement mode, what are the inputs you do and suggestions on how to do it, please - thank you

Yea so its a glitch which is called a lag laugh I have a tutorial here on how to do it