Westerado: Double Barreled

To unlock this achievement you will need to save up $3000 and then purchase the home from the banker in Clintsville. You will get a lot of cash from doing missions, shooting bad guys, (or the good ones too depending on your play style) or just exploring the world.

Be careful and deposit any large amounts of cash you have with the banker as you play though. If you die you lose half of what was on you at the time. So putting some in the bank as you play will allow you to build up that $3k quickly.