This isn't much of an achievement guide really, but it might help some people out. I've just gotten the achievement today and it's not as bad as you'd think to get legit. I was actually finding it hard to set up boosting sessions so I played normal matches. I was surprised how easy it was.
There are only ever a couple of people playing pro clubs anymore but I think that this makes it easier; the less people on your team the better it is for you. You can get your AI team mates to pass to you at any point so you're pretty much free to work on whatever you wish. To be fair the AI difficulty is pretty hard, especially if your pro's ratings are shit like mine were.
I managed to unlock the achievement in 10 matches. Here are the accomplishments I did:
Ball skills (2)
Beat players off dribble 8/8 15/15
Matches completed 4/4
Assists from crosses 1/1
Short passes 10/10 80/80
Long passes 6/6
Play in the rain 1/2 2/2
Matches completed 2/2 3/3 5/5 6/6 8/8 9/9
Beat off dribble 16/16 18/18 20/20 24/24 25/25
Goals 1/1 4/4
Headers won 12/12
Shots on target 6/6 12/12
Goals from volley 1/1
Physical accomplishment 9/9
Traits and celebrations (6)
Shooting accomplishments 5/5
Physical accomplishments 6/6 12/12
Passing accomplishments 2/2
Total accomplishments 8/8 10/10
Kit and appearance (4)
Matches played 1/1
Play in the rain 1/1
Total 6/6 12/12
As you can see most of these things come without any skill at all. You don't really have to worry about getting assists or even scoring goals. You could just foul 6 players, play a couple more matches or play 10 matches with no offsides. I set my player to CAM but I didn't always manage to play as this position. In 2 matches the CAM role was taken so I played one match as ST and one as RM. I'm not sure if this affects the achievement progress or not but I think it's best to play one position to be safe. Another thing I used to do was hold the 'teammate contain' button (RB) constantly while the opposition were in possession. This seemed to make my AI better and in the end game stats I had so much more possession even if I personally contributed nothing.
The only frustrating thing is when you begin to win the match and the other player quits out. None of your progress will save. To stop them from rage quitting, I used to let the other player score a goal against me so they'd feel like a boss and I'd get progress for my achievement to save..
I also found that the only time I could find randoms to play with was after 5pm GMT.
I'm not sure how long the servers for this game will be around so I would get his done asap. If you can't get a boosting session sorted then don't despair - doing it legit is actually pretty painless even if you're below average at football games