Here is the full list of all 10 Backyard Sports: Backyard Football 10 achievements worth 1,000 gamerscore.
Throw for 300 yds with one player in a game
Throw 3 TD passes with one player in a game
Run for 100 yards with one player in a game
Run for 200 yards with one player in a game
Run for 3 TDs with one player in a game
Catch the ball for 100 yards with one player in a game
Catch the ball for 200 yards with one player in a game
Catch 3 TDs with one player in a game
Record 8 tackles with one player in a game
Sack the opposing QB 3 times with one player in a game