Here is the full list of all 22 Super Mega Baseball: Extra Innings achievements.
You have hit over 500 homeruns.
A player on your team had a rating of 90 or higher in each of Power, Contact and Speed.
A player on your team had a rating of 90 or higher in each of Arm, Fielding and Speed.
You won a season game at Ego 99.
You caught the batter looking for a 3rd-out strikeout with the bases loaded.
You hit a homerun over 500 feet.
You hit a homerun with the bases loaded.
You won a season game at Ego 90 or higher.
You won a championship while playing at ego 80 or higher.
You have struck out over 500 batters!
You won a season game at Ego 80 or higher.
A player on your team led the league in homeruns hit at the conclusion of regular season play.
Players on your team led the league in each of batting average, homeruns and RBIs at the conclusion of regular season play.
You pitched a complete season game with a single pitcher and gave up no runs.
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.
A player on your team led the league in batting average at the conclusion of regular season play.
Your hard battle through the season has rewarded you with a playoff spot.
A player on your team hit a single, double, triple and a homerun in a single game.
You hit the ball with a perfectly timed power swing (99 swing score).
You hit a homerun.
You got two outs on the same play.