Full list of all 42 The BIGS achievements worth 1,000 gamerscore. It takes around 35-40 hours to unlock all of the achievements on Xbox 360.
Beat Rookie Challenge (NL)
Beat Rookie Challenge (AL)
Max out your rookie's attributes
Beat Spring Training (Cactus League)
Beat Spring Training (Grapefruit League)
Throw 15 perfect pitches in a row
Hit 5 triples in a game
Hit 3 triples in a game
Steal 10 bases in a game
Steal 5 bases in a game
Steal 3 bases in a game
Steal a base
Get a Grand Slam
Get 1,000,000 points in Home Run Pinball.
Get 500,000 points in Home Run Pinball.
Get 250,000 points in Home Run Pinball.
Get 100,000 points in Home Run Pinball.
Collide with the catcher at home plate
Pitch a perfect game
Pitch a no-hitter
Get 20 runs in a game
Get 15 runs in a game
Hit a triple
Hit 5 doubles in a game
Hit 10 home runs in a game
Hit 3 doubles in a game
Throw 10 perfect pitches in a row
Hit a double
Hit 5 home runs in a game
Get 10 runs in a game
Get 7 runs in a game
Hit 3 home runs in a game
Throw 5 perfect pitches in a row
Get 15 strikeouts in a game
Get 5 runs in a game
Get 10 strikeouts in a game
Hit a home run in a game
Get 3 runs in a game
Throw 3 perfect pitches in a row
Get 5 strikeouts in a game
Get 3 strikeouts in a game
Get a strikeout in a game