Atlas didn't leave the outside world after only attacking a single factory. He spent several days and traveled across several floors, taking down a total of five production factories of Dusk.
Two of them were for alchemy, a single one was for smithing, and the final two were meant to research qi and formations.
Atlas didn't originally plan to only target those from secondary professions, but it just so happened that most of the locations he could attack by himself were those kinds of places.
He did the work personally in order to properly contribute to the growth of the Society Legend and ingrain himself into it. As such, he wanted to create as much of a buzz as possible.
Unfortunately, the Tower didn't receive his latest attacks with the same kind of grandeur they did the first. There were no great fights or displays of power, after all. Atlas moved like a machine, doing the bare minimum to accomplish his goals before disappearing.
