Start a play now game choose your team and player 2s team. When player 2 gets the ball choose punt, as player1 go offsides stand in front of the punter, player 2 sets up the kick then as player 1 jump to try and block the punt. If unsuccessful have player 2 accept the penalty and try again,
When you successfully block the punt have player 2 decline the penalty and the achievement should pop.