There are 22 missions you must complete to unlock this achievement. There are four Buchons in this province. After defeating a few of them, you have access to the Underboss, La Plaga. Once La Plaga is taken care of, eliminate the remaining Buchons then go after the Head of Security, El Muro. When you’ve shut down El Sueno’s entire security operation, the achievement will unlock.
To see how many missions you’ve done in each province, press
to access the TACMAP.
La Yuri y El Polito (Itacua, Difficulty: 1) - 6 missions
El Pozolero (San Mateo, Difficulty: 4) - 5 missions
General Baro (Flor De Oro, Difficulty: 4) - 4 missions
Carl Bookhart (Montuyoc, Difficulty: 5) - 5 missions
Underboss: La Plaga - 1 mission
Head of Security: El Muro - 1 mission