Shady deals Trophy in Little Big Workshop

IncoInc will first appear when you've unlock the Gold Milestone Challenges by completing the Silver Milestone Challenges. Their main products will involve electronics/robots. When they first call, they'll give you a task to complete. If you don't accept it right away, that's fine. It'll still be in the Challenge list in the Market menu. Complete this first challenge to gain them as a client and unlock this trophy.