Here is the full list of all 41 Super Mega Baseball 3 achievements.
Overcome a 5-run deficit for a win in a Franchise, Season, or Elimination game.
While editing a Custom team, increase all of one player's skills to 99.
Win the championship of a Standard Elimination.
Strike out 3 batters while throwing exactly 9 pitches in a single inning against the CPU.
Throw out a CPU-controlled baserunner attempting to steal a base.
Make an out with a diving catch.
Get two outs on the same play against the CPU.
Strike out a pinch hitter with exactly three strikes against the CPU.
Hit a home run.
Pitch a 9+ inning complete-game shutout in a Standard Franchise, Season, or Elimination game.
Reach a 12-run lead in a Franchise, Season, or Elimination game.
Strike out 15 batters in one game with a single pitcher against the CPU.
Foul off 4 pitches with a 2-strike count against the CPU.
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.
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.
Get a base hit with a bunt while playing 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.
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 10 complete-game wins in a single regular season (9+ inning games only).
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.