Inside Professor Chaos ' lair inside a U-Stor-it storage shed. To access the lair, you need to get the Chaos Lair Key from Butters ' room. Then, you have to hit the.
Friends list - Friends and keys - Collectibles - South Park: The Stick of Truth . from Butters, after you complete the tutorial;; The key to Chaos Lair - Butters ' room.
I just started the game and have a key to Prof. Chaos ' secret lair. I searched Butter's house but didn't find any kind of secret entrance (unless I.