Sharpshooter Challenges are a class of multiplayer challenge under the Free Roam category. Each rank of each challenge requires the player to accomplish various feats of precision shooting. When each rank is completed, the player earns XP and a title.
The challenges are divided into two series, Sharpshooter I and Sharpshooter II, as detailed below. Challenge tasks can be completed in public or private Free Roam sessions. Each rank of each challenge must be completed before moving on to the next rank.
For Rank 1, it is best to take on Gang Hideouts (hideouts with Walton's Gang are the best, since top hats are an easy target). Find a big group of them and attempt headshots. It is easy to overshoot and hit their hats.
For Rank 2, use a shotgun and stand a distance away. The spray will more likely than not knock off the hat and the gun at the same time.
For Rank 3, go to Bearclaw Camp. The bears will continually respawn and a repeater is enough to take them down with one shot to the head.
For Rank 4, the challenge can only be activated if the horse is moving. Just sitting on a horse is not sufficient. Using a shotgun at short- to mid-range while aiming at your victim's head works well when shooting at targets that can withstand a few stray buckshot pellets.
For Rank 5, this is the hardest to achieve as it only works for wild animals (the player's tamed horse doesn't count). Best to go to Tall Trees, where there is a large amount of wild animals mixed together. However, watch out as Tall Trees contains the most animals that are hostile towards the player.