How to get the no St achievement?

[Fc bal op t dak]

So to get this achievement, I need to:
1. Set my formation as 5-5-0
2. I can have strikers playing as other positions as long as nobody is playing as striker
3. Must be competition - I'm assuming a league game counts
4. Last but not least, to win

Am I right?

1. Formation doesnt matter only no St

2. Yes you can set St on amc position as example

3. Yes only in league (red ) competition

4. Yes you must win thats THE importants

Good luck