This achievement is actually pretty tricky since there is really no way to cheat for it. It will NOT unlock if you have a friend help on the other team and just run away from your returner. You must also do this on Varsity difficulty or higher. I did mine in Dynasty mode, not sure if it works in Play Now (does work in play now, confirmed by zyxomma100).
I played Dynasty as Ohio State who has a PR with 99 speed. If you sim to the 2nd season, your first game will be vs 1AA Northwest which is probably the worst team in the game.
The video below shows my strategy for getting the punt return for TD. You will want to run backwards in zigzag pattern and try to bunch the other team up as much as possible. When you think you have a clear path, try to get around the corner and you should be smooth sailing to the end zone. This may not work every time, still need some help from your blockers, but should get it after a few tries. It also helps to have them punt from as far on their end of field as possible so that you have more room to run backwards. I found that either PR left or right works the best.