For this achievement, you need to have at least shots on goal. A shot on goal is achieved when you either score, or when a shot is blocked before it crosses the line, but it would've been a goal if it wasn't blocked. For example a shot that is off target and crosses the line, which results in the opponent's goalkeeper having to shoot/pass the ball back into play, is not a shot on goal. To make sure as many of your shots are on goal, aim towards the goal, and try and shoot from inside the box as much as possible. This way you have higher chances of making a shot on goal. Shoot at least 11 times, and make sure at least 70% is on goal. 70+% of 11 would be 8+ shots on goal. This achievement should not be a big deal.