Act I The End of The Drug Baron
How To Unlock: Kill the escaping drug baron in 'Better late than never' mission.
At the end of the “Better late than never” mission in the 'Unfinished Business' campaign you will be asked to kill the Hesus Santana. Next to him are 2 drug barons. After you killed the first one, the second baron will try to escape. Kill him to unlock this cheevo.