Here is the full list of all 25 Super Mega Baseball: Extra Innings achievements worth 1,000 gamerscore.
Hit a homerun.
Hit a homerun with the bases loaded.
Pitch a complete season game with a single pitcher without giving up any runs.
Crush the batter's hopes by climbing the wall to snag one out of the sky.
Catch the batter looking for a 3rd-out strikeout with the bases loaded.
Make it to the playoffs in a season of any length.
Hit a single, double, triple and a homerun in a single game with a single player on your team.
Win a championship.
Lead the league in batting average with a player on your team at the end of regular season play.
Lead the league in homeruns with a player on your team at the end of regular season play.
Lead the league in each of AVG, HRs and RBIs with players on your team at the end of season play.
Win a championship while playing at Ego 80 or higher.
Hit a homerun over 500 feet.
Win a season game in extra innings.
Hit a total of 500 homeruns.
Modify a player on your team to have a rating of 90 or higher in each of Power, Contact and Speed.
Modify a player on your team to have a rating of 90 or higher in each of Arm, Fielding and Speed.
Hit the ball with a perfectly timed power swing (99 swing score).
Get two outs on the same play.
Strike out a total of 500 batters.
Win a season game at Ego 80 or higher.
Win a season game at Ego 90 or higher.
Win a season game at Ego 99.
Overcome a 5 run deficit for a win in a season game.
Strike out 4 times in a single game with a single player.