Here is the full list of all 144 Out of the Park Baseball 20 achievements.
3 HR in an inning
CG Shutout on under 100 pitches
Hit a walk-off HR
50 Game Hit Streak
Shared Shutout for the team
Closer strikes out the side
Come back from a 4 run deficit to win
3 HR Game
Strike out 18 batters in a game
4 extra-base hits in a game
5 hit game
Get 10 or more RBI in a game
Score every inning
Score 10 runs in an inning
Score 6 or more runs in a game
Strike out 15 batters in a game
Score 15 runs in an inning
Score 20 runs in a shutout
Throw a 1-hitter
Hit a Grand Slam
Achieve a pitching game score of at least 100
9 hits in an inning
6 hit game
Score 4 runs in a game
Score 5 runs in a game
6 SB in a game
Score 30 runs in a game
Score 15 runs in a game
Score 15 runs in a shutout
4 SB in a game
5 SB in a game
Pitch a shutout
CG with no BB allowed
Have every player in the lineup get a hit
Score 6 runs in an inning
Bat around in an inning
Hit a leadoff HR
6 hits in an inning
Score 10 runs in a shutout
Strike out 10 batters in a game
Strand the bases loaded
40 Game Save Streak
3000 Career Wins
1500 Career Wins
Successfully construct a dynasty for your owner
500 Career Wins
20 Game Win Streak
Complete all goals your owner tasks you with
Record a 16-game win streak
40/40 Player
40 Game Hit Streak
Sweep a playoff series
30 Game Hit Streak
MVP of the All-star game
2 HR Game
Get 5 RBI in a game
3 extra-base hits in a game
4 hit game
Have the top vote-getter for the All-Star Game
Trade for a recent MVP winner
30/30 Player
First Player of the Week award
Achieve a good season score
Win the rookie of the year award
Win the championship in a sweep
Reach the finals
Win the pitching triple crown
15 Game Win Streak
Win the rookie of the month
7 game HR streak
Turn a Triple Play
12 Game RBI Streak
16 Game Run Streak
Win the MVP
Win the manager of the year award
Win a silver slugger
Achieve a top season score
Win the championship
Win the championship on a low budget
Win the hitting triple crown
Have a player lead the league in BA
Have a player lead the league in HR
Have a player lead the league in ERA
20/20 Player
6 game HR streak
Record an 8-game win streak
10 Game RBI Streak
4 game HR streak
Record a 12-game win streak
9 Game Run Streak
20 Game Hit Streak
Win the batter of the month
Win a fielder of the year award
20 Game Save Streak
Walk-off hit
Have a player lead the league in wins
10 Game Win Streak
Win the pitcher of the year award
Achieve a solid season score
Reach the post-season
Win the Reliever of the Year award
13 Game Run Streak
Complete an Owner Goal
30 Game Save Streak
Win the pitcher of the month
First All-Star
7 Game RBI Streak
First Series Sweep
First Draft Pick
First Trade
Trade for a recent all-star
First Quality Start
First Save
First Contract Extension
First Free Agent Signing
4 HR Game
Get 8 RBI in a game
Hit a walk-off Grand Slam
Hit for the cycle
Pitch a no-hitter
Pitch a perfect game
Score 20 runs in a game
First Game Win
First Home Run
First Stolen Base
3 DP in a game
5 DP in a game
6 DP in a game
Combined no-hitter
Throw out 2 runners on the bases
Throw out 3 runners on the bases
Throw out 4 runners on the bases
Turn an unassisted Triple Play
5 extra-base hits in a game
5+ PA with no official AB in a game
9-pitch inning with 3 strikeouts
Steal Home
Hit for a natural cycle
4 strikeout inning
Come back from a 7 run deficit to win
Come back from a 10 run deficit to win
4 HR in an inning
5 HR in an inning
12 hits in an inning