Here is the full list of achievements in NBA 2K12 for the Xbox 360.
There are no secret achievements in this game.
4-Point Line (20) – Pull off a successful 4-point play with any player, in a non-simulated game
A 2K to Call My Own (25) – Create a My2K Account
Another Day, Another Win (20) – Win 5 NBA Today matchups
Back to Back to Back (15) – Win 3 ranked matches in a row
Birthday (10) – Create-a-Player
Block Party (20) – Record 10 or more blocks with any team, in a non-simulated game
Buzzer Beater (20) – Make a game winning shot with no time left on the clock, in a non-simulated game
Check! (15) – Complete all 3 in-game objectives in My Player mode
Come Fly with Me (15) – Purchase Michael Jordan’s dunk package (His Airness) in My Player mode
Dawn of an Era (15) – Get drafted as a lottery pick in the NBA draft in My Player mode
Don’t Hate the Player (25) – Win the championship in an Online Association
Dub-Dub (20) – Record two double doubles with any teammates, in a non-simulated game
Five by Five (20) – Record 5 or more in 5 different stats with any player in a non-simulated game
G Prime (20) – End the 1st period with a 15 point lead or greater on the Hall of Fame difficulty setting
G Recovery (10) – Play an entire game using manual substitutions, in a non-simulated game
G Performance (20) – Score at least 48 points with Kevin Durant to set a new career high, in a non-simulated game
Giveth and Taketh Away (20) – Record 10 or more rebounds and assists with any player, in a non-simulated game
Hamilton (20) – Win 10 ranked matches total
Hey Mr. DJ (10) – Create a 2K Beats Playlist
Hold the Fat Lady (20) – Start the 4th period losing by 10 or more points and win with any team, in a non-simulated game
Home Court (25) – Earn the NBA’s best record in The Association mode (at least 30 games played)
I’m Worth It (25) – Land a contract that pays at least $10M per season in My Player mode
Immortality (30) – Make the Hall of Fame in My Player mode
It’s Better to Give (15) – Share any file type through 2K Share
It’s Raining (20) – Make 15 or more 3-pointers with any team, in a non-simulated game
Left My Mark (15) – Complete 10 of the NBA’s Greatest challenges
Lincoln (15) – Win 5 ranked matches total
Made My Name (15) – Complete 5 of the NBA’s Greatest challenges
Men of Steal (20) – Record 10 or more steals with any team, in a non-simulated game
Money Bags (15) – Purchase 3,000 skill points in a single transaction in My Player mode
My All-Star (25) – Be named an NBA All-Star in My Player mode
My Big Eight-O (20) – Earn an 80 overall rating in My Player mode
My Every Day Player (20) – Become a starter in the NBA in My Player Mode
My Player of the Game (20) – Be named Player of the Game (in an NBA game) in My Player mode
NBA Cares (15) – Make a donation to the NBA Cares global community outreach initiative in My Player mode
Not Your Father’s Association (25) – Join an Online Association
Shooting Star (20) – Win the MVP award in NBA: Creating a Legend mode
Smothering (20) – Hold the opposing team’s FG% below 40% with any team, in a non-simulated game
Sprite Slam Cam (15) – Get the Sprite Slam Cam replay after a dunk with LeBron James
Streaking (25) – Win 5 games in a row in The Association mode (playing all 5 games)
Swat and Swipe (20) – Record at least 5 blocks and 5 steals with any team, in a non-simulated game
The Closer (20) – Hold the opposing team to 0 points in the final two minutes of regulation, in a non-simulated game
The Sum of Its Parts (15) – Play a Team Up Game
The Whole Shebang (50) – Earn every achievement in NBA 2K12
This One Counts (15) – Win one online ranked match
Ticker Tape (30) – Win an NBA Championship in The Association mode (playing every playoff game)
Trip-Dub (20) – Record a triple double with any player, in a non-simulated game
Wire to Wire (20) – Do not allow your opponent to lead the game at any point with any team, in a non-simulated game
Wrote My Legend (30) – Complete all 15 of the NBA’s Greatest challenges
You’re Officially Hot (20) – Win 5 ranked matches in a row
