In one of the missions, as you play through Shadow of the Tomb Raider, the action will suddenly take you to Croft Manor. This is a flashback stage during which you take control of young Lara Croft. You must remember that you cannot return to the Croft property after you finish this stage of the game. In this location there is one challenge and one collectible to gather - Mystery of the White Queen.
The Bullseye challenge consists in throwing a ball at four different targets on the playground. Balls are scattered across different parts of the property, so you don't have to worry if one of your balls gets stuck somewhere (a situation that often occurs on a ship).
The first three throwing targets are right behind the point where the young Lara appears. Two of them stand on the ground, one hangs on a tree branch. In the case of those below, you can approach as close as possible and make a light throw. You can be sure that little Lara will hit the target.
You will find the last target to the left of the three previous ones. All you have to do is run to the left and a target will be hanging on a tree branch. When you throw a ball at all four targets, the challenge will be completed.