Reach the wizard mode by Spelling out Boba Fett by completing missions only from the Hutt Cartel. You may skip the first four (Spice Trafficker, Tuskin Raiders, Non-Paying Debtor, Disloyal Mercenary) and just start with the fifth job (Rival Clan Leader), which gives the most respect and gives acess to the final 3 modes. After completing the fourth job and spelling out BOBA FETT with only Hutt Cartel missions, the achievement unlocks. You don't have to complete the wizard mode.
For a detailed description on how to complete the four required modes for the Hutt Cartel, see Snap Dragon's detailed guide for Somewhat Indigestible