NBA 2K12
59 Achievements
1,250
Buzzer Beater
Make a game winning shot with no time left on the clock, in a non-simulated game.
20
How to unlock the Buzzer Beater achievement in NBA 2K12 - Definitive Guide
If u don't want play long game, just remove 24 sec (shot clock), take ball out off your half-court and wait, until 5 minutes ran. I suggest to do this with other achiev - for example Hold the Fat Lady or The Closer - maybe either;)
What I did was max out all of my sliders and turn off all of the rules. I put my second controller as the other team. I paired this with the comeback when down by 10 or more in the 4th quarter achievement. Make sure that you are either tied or down by less than 3. When there is less than 1 minute left in the game just stay outside the perimeter and then take the shot just before time runs out. With the 3 pointer slider maxed out it is rarely going to miss however if you want to just drive inside and go for 2 remember to be tied or down by 1.
The only setting that matters for this achievement is the quarter length. 5 minute quarters are minimum for this achievement.
Other then that, you can turn off all NBA rules, and turn User/Computer Sliders up/down.
With sliders turned up, you can dribble out the clock. Around 5 seconds make your way to the 3-point line, at around 1.5 seconds left shoot a mid range/3 pt shot. As long as no time is left on the clock when the shot goes in, the achievement should pop.
If you are having any trouble with this achievement, call a time out around 15 seconds left, after the time out save and quit out of the game. When you reload you will be coming out of your time out. If for any reason you are unable to make the shot, dashboard out of the game and retry.
To make things easier for yourself, you can change your team's settings by going to options > game sliders.