This challenge is completed by entering the shops in the central area. * The first entrance is beneath the "Flowers 407" sign; part of the quest Paint Job. It is located north of the door to Jack's office and across from the gun shop. The door doesn't open: simply touching the door is sufficient. * The second is by walking up to the robot shop under "Hall of Helios", where R-0513 is walking around. This location is part of the quest Cleanliness Uprising. * The third can only be accessed after finishing Dr. Nakayama's quest, Kill Meg. The quest will take you into the gun shop.