Here is the full list of all 41 Super Mega Baseball 3 achievements.
Get a base hit with a bunt while playing against the CPU.
Hit a home run.
Get two outs on the same play against the CPU.
Make an out with a diving catch.
Foul off 4 pitches with a 2-strike count against the CPU.
While editing a Custom team, increase all of one player's skills to 99.
In Franchise mode, make the playoffs with an average team age of 33 or more.
In any Custom game mode, play a championship between two user-controlled teams.
In Franchise mode, sign a player to a salary of $10m or more.
In Franchise mode, sign a player with an overall skill of C- or below.
Pick off a baserunner when playing against the CPU.
Hit a home run with the bases loaded when down by exactly 4 runs.
Overcome a 5-run deficit for a win in a Franchise, Season, or Elimination game.
Reach a 12-run lead in a Franchise, Season, or Elimination game.
Hit a home run in every stadium.
In Franchise mode, increase a player's overall rating to S through Player Development.
In Franchise mode, end the regular season with a payroll less than 50% of your team's budget.
Throw out a CPU-controlled baserunner attempting to steal a base.
Strike out a pinch hitter with exactly three strikes against the CPU.
Hit 4 home runs in a row against the CPU.
Steal 3rd base with a pinch runner against the CPU.
In Franchise mode, remove a negative trait from a player through Player Development.
Strike out 15 batters in one game with a single pitcher against the CPU.
Hit a single, double, triple, and home run with the same player in a single game.
In Season or Franchise mode, make it to the playoffs as the top seed in your league or conference.
Win the championship of a Custom Elimination.
Win the championship of a Custom Franchise or Season.
Hit a 500+ foot home run.
Pitch a 9+ inning complete-game shutout in a Standard Franchise, Season, or Elimination game.
Strike out 3 batters while throwing exactly 9 pitches in a single inning against the CPU.
Pitch 10 complete-game wins in a single regular season (9+ inning games only).
Win the championship of a Standard Elimination.
Complete a standard regular season with your players leading the league in AVG, HRs, and RBIs.
Complete a standard regular season with your players leading the league in ERA, Ks, and WHIP.
Pitch a 9+ inning perfect game with a single pitcher in Franchise, Season or Elimination mode.
Win the championship of a Standard Franchise or Season.
Win 2 championships of a Standard Franchise in a row.
In Standard Franchise or Season mode, win every game in the regular season.
Win the championship of a Standard Season with a season average Ego of 80 or higher.
Win five championships in the same Standard Franchise.
Win a 9+ inning game against the CPU at Ego 99 where both teams are Standard teams.