Portal 2 PeTI - "Lasersys" by quaternary
Channel: LB
Date: 10/04/2017

https://steamcommunity.com/sharedfiles/filedetails/?id=623619270
Blind playthrough. IT'S A QUADRUPLE BOOTSTRAP! AMAZING! I guess that's why you didn't stop at tertiary and went on to quaternary!

This video is also on Twitch: https://www.twitch.tv/videos/186152233