Penalty Kick Online starts out fairly easy, but by the third or fourth opponent, the difficulty starts rising pretty significantly. There is definitely a learning curve, and players may have a tough time the first couple of attempts. However, once you get the shot power and goalie hand placement down, the first few opponents will be light work. Your math skills will have to be on point as well, having an additional chance for every shot is a major game-changer and should be taken seriously if you hope to win against the harder opponents.