Lost Letters, similar to the letters from Far Cry 3, are one of the collectibles in the game, of which there’s 20 in total hidden throughout Kyrat. As with all of the collectibles, you can buy maps from the store that will show you where the letters are located on your map. The letters tend to be hidden in caves or in underground places and you can set a waypoint on them that will lead you straight to them.

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Lost Letters are usually hidden in underground places and always look like the above screenshots.

Caretaker Of Memory

Find 10 Lost Letters (Campaign only).

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