This achievement is rather straightforward. You're going to have to beat someone in a MUT Seasons game. The matchmaking tries to match you in your level based on how many games you've played, so when you are playing for the first time it will be with another opponent who is playing their first Seasons game.
Here are some tips if you are having a hard time or are very new to this game:
https://www.gottabemobile.com/21-madden-15-tips-and-tricks/Here is a video walkthrough:
Credit to HMP Contests.