Thief Side Missions Note

After you meet Vittori for the first time, Basso stops giving you missions at The Siren's Rest. Once you've finished all of Basso and Vittori's jobs, look for Basso back at the Crippled Burrick. If he isn't there, and you've finished all of the missions from thse two, go to Ector's Emporium.

Remember, you don't gt all of the missions at once. You only get a handful after each chapter. You should be able to get the achievements for completing all of the client jobs, as well as Basso's, before you start chapter seven. That means you have to check back with Basso, Vittori, and Ector until you've received and completed all of the missions.