Here is the full list of all 25 Super Mega Baseball: Extra Innings achievements worth 1,000 gamerscore.
A player on your team had a rating of 90 or higher in each of Arm, Fielding and Speed.
You have hit over 500 homeruns.
You won a season game at Ego 80 or higher.
You caught the batter looking for a 3rd-out strikeout with the bases loaded.
You overcame a 5 run deficit to win a season game.
You have struck out over 500 batters!
You hit a homerun over 500 feet.
You crushed the batter's hopes by climbing the wall to snag one out of the sky.
You capped your successful season with victory in the playoffs.
You won a season game in extra innings.
You hit a homerun with the bases loaded.
Your hard battle through the season rewarded you with a playoff spot.
A player on your team led the league in batting average at the end of regular season play.
A player on your team led the league in homeruns at the end of regular season play.
Players on your team led the league in each of AVG, HRs and RBIs at the end of season play.
You pitched a complete season game with a single pitcher without giving up any runs.
A player on your team hit a single, double, triple and a homerun in a single game.
A player on your team struck out 4 times in a single game.
You hit the ball with a perfectly timed power swing (99 swing score).
You got two outs on the same play.
You hit a homerun.
Win a championship while playing at Ego 80 or higher.
Modify a player on your team to have a rating of 90 or higher in each of Power, Contact and Speed.
Win a season game at Ego 90 or higher.
Win a season game at Ego 99.