Here is the full list of all 34 Super Mega Baseball 4 achievements.
Trigger the Meltdown trait for the opposing pitcher (vs CPU only).
Hit two 450+ ft home runs in one game.
Hit a home run against a pitch enhanced by an Elite Pitch Trait (vs CPU only).
Hit a home run with a Legends League player.
Complete a Shuffle Draft with a Draft Pool consisting of players from multiple leagues.
Complete a Shuffle Draft with a team that has at least 10 Traits at their highest level.
Strike out five hitters in two innings (vs CPU only).
Sign a player in Franchise mode who boosts a Chemistry to the highest level.
Win a game in every stadium.
Play extra innings during a night game.
Pick off a runner (vs CPU only).
In a single game, hit a home run with both Junior Young Jr and Junior Young Sr.
Finish a double play on a grounder before a hitter with 90+ Speed reaches 1B (vs CPU only)
Record an outfield assist with a player who has the Cannon Arm Trait (vs CPU only).
Take a comebacker to the head with a pitcher who has the Metal Head Trait.
Hit three home runs in a single game with the Originals.
Hit a walk-off home run with a player whose Mojo is On Fire or Jacked (vs CPU only).
Rob a home run with a jumping wall catch.
Pitch a 9+ inning complete game with a pitcher who has the Workhorse Trait (vs CPU only).
Throw a 9+ inning complete game shutout (vs CPU only.)
Hit a 500+ ft home run.
Hit a walk-off home run in a standard playoff or Elimination game (standard teams only).
Turn a double play after an outfielder makes a diving catch for an out (vs CPU only).
Hit a home run immediately after the Sign Stealer Trait activates (vs CPU only).
Throw an immaculate inning (three strikeouts in nine pitches) (vs CPU only).
Win the Triple Crown in a standard Season or Franchise (standard teams only).
Win a championship in standard Franchise, Season, or Elimination with a Legends League team.
Hit for the cycle (a player records a single, double, triple, and home run) (vs CPU only).
Throw a 9+ inning no-hitter in standard Franchise, Season, or Elimination (standard teams only).
Turn a triple play (vs CPU only).
Throw a 9+ inning perfect game in standard Franchise, Season, or Elimination (standard teams only).
Win a standard Elimination with a standard team and a tournament average Ego of 90+.
Win a standard Season or Franchise postseason with a standard team and a season average Ego of 80+.
Win a single 9+ inning game on Ego 99 between two Standard teams (vs CPU only).