The mission will be available after the capture of Joaquin Arroyo. A poster of Cortez will also appear on the Board. Before you go in search of a criminal, you should listen to the Sheriff, who will tell you about the hiding place of the gang. Next, Morgan will have to go to Haptus breach in the South-West of the city.
Esteban will be hiding at the end of the corridor. You can kill it and get a reward. Or you can try to take it alive. To do this, you will need to shoot him in the leg and pull him to the surface.
Before Morgan gets to the top, some more opponents will drive up to the mine. In this case, Arthur will have to hide and use the rifle and the Eagle eye skill to kill them all.
After that, Cortez must be put on a horse, tied up, and taken to Tumbleweed. Award for Esteban-65$