This is a guide to help players who aren't good in playing online games to get this achievement by just playing ONE game. The sweet part is, you don't even need to win that game.
1. You need to reach EASFC Level 28. So if you've reach Level 20 in FIFA 12, this should be rather easy to reach.
2. You need lots of EASFC credits. If you preordered the game, you should have a bonus that gives you 10,000 credits, which should come in handy.
3. Start the Seasons campaign afresh, at 0 games played, on Division 10.
Once you're done with the above, head to the EASFC Hub and choose ''Catalogue''. On the catalogue, you should be at the page that shows all available items for Level 21-30. Buy all the following:
- Level 24 Seasons Win
- Level 28 Seasons Draw
Hold LT to drop a menu, and move to Level 1-10. Buy all the following:
- Level 3 Seasons Draw
- Level 8 Seasons Draw
Now hold LT and move to Level 11-20, and buy all the following:
- Level 12 Seasons Win
- Level 16 Seasons Draw
- Level 20 Seasons Draw
Now go to Seasons. You should find yourself now at 11 points without having to play a single game. Yes, you've been promoted and you still have 3 games left to play.
From here, just try to get a draw from your remaining 3 games to hit 12 points to win the division. If you do badly, you can also go back to the EASFC Hub to buy the item ''Seasons Extra Game'' to give youself more chances of getting the draw.
Doing the above also unlocks:
with both achievements unlocking at the end of the season.
Personally I'm only at Level 26 but I did win and draw a few games on my own. But the above is designed for players who's starting a season on Division 10 afresh, at 0 points and 10 games left to play.
Hope this helps!
Edit: Someone told me that if you reach EASFC Level 32, you can purchase another Seasons Win. However, I'm not sure if this would pop the achievement or not as I've not tried it.
Edit2: AkUzEd commented that you could repeat buy the Season Wins to get 12 points, get out of Seasons and get back in to get both the achievements. Read the comments for more details!
Edit3: With a recent update, buying enough points and getting out and back into Seasons doesn't unlock the achievement anymore. However, using the "play one game" method still works. Thanks to smrnov for the confirmation.