So using some tips from the above guide on what buttons to press, I got this achievement while playing beginner level (4 min. half) working on the Women's International Cup achievement. I had tried multiple times to do this against a single defender whilst running down the pitch to no avail.
What worked for me was dribbling the ball into the box. I had a couple defenders to my right that were pretty close and a couple in front, but had quite a bit of space to work with. I pressed
and
away from the defenders on my right and immediately shot because I was close and had space. The achievement popped right after I scored on the shot. I never was actually contested by a defender, so I think this may work by pressing
and
while having defenders around or in front of you and scoring a goal, thus "beating" the defender.
Hope this helps. Please comment with any suggestions to better this guide.