Help with bl2 mods

does anyone know how to do the tripple spawn run like what joltz is currently doing? i wanna do my own run of it but idk how

https://www.youtube.com/watch?v=mvbxtWDTVmg - here is the video for reference

Yeah we don’t talk about mods here. I suggest asking Reddit

reddit is down so thats why i tried asking here but thanks anyways