Portal 2 PeTI - "Transgression" by Dr.  A
Channel: LB
Date: 2017-08-08

https://steamcommunity.com/sharedfiles/filedetails/?id=1092416409
Blind playthrough. I'm pretty sure this needs to be updated, or have a solution video made.

This video is also on Twitch: https://www.twitch.tv/videos/202456199