For this achievement, you are required to collect all 15 Flyers within the game. The flyers can be obtained by looting businesses or residential buildings and are spawned at random.
This achievement can be obtained fairly quickly and without too much work. Simply go to the place marked on the map below located within the first island.
You will stumble across a building known as 'St. Boadle's Church'. When you enter the building, you will be able to search freely without having to break in or hold anybody up like you would in a store.
If you enter the church and search the hallway, you should find yourself a flyer (If you do not, please do not get put off). All you need to do next is leave the building and walk/run directly south to the opposite side of the road below you. Once there, turn around and then re-enter the church again to repeat the process. This seems the refresh the building allowing you to research the hallway again for a chance of another flyer. Rinse and repeat this process until you have managed to collect all 15 Flyers. Please find below a list of all flyers in alphabetical order.Art Dealer Flyer
Body Shop Flyer
Car Lot Flyer
Clothing Store Flyer
Donut Store Flyer
Gas Station Flyer
General Store Flyer
Gun Store Flyer
Outdoor Store Flyer
Pawn Shop Flyer
Salvage Yard Flyer
Please note that flyers can be collected multiple times and spawn randomly within buildings. You can also track your progress as to which flyers you have collected within the 'Statistics' menu. Each time you collect a new flyer, you will get a notification in the top left of your screen informing you that a note has been added to your journal.