NBA 2K11

To attain this achievement, you have to successfully make 15 three pointers in a game. I would just edit sliders to 100 for three point shots.

To make this simple, and to make attaining other achievements for this game easier, I recommend taking the time to edit the sliders to your favor beforehand.

When you load the game and enter the menu, look for the tab that states "Options." Once there, find the tab that says "My NBA Settings." Next, simply go to the tab that states "Game Sliders," and put the attributes to your favor as well as downgrading the computer's stat.

When you have finished, just back out and go to a quick game, in which case the game will automatically save the sliders for future games. To disable or reset the sliders to how they originally were after you have attained your achievements, just go back to the sliders and it will give you the ability to customize it to default sliders.

To get this achievement, you can just play a quick game with either a computer or two controller method. But note that if you are playing against a computer, you cannot switch teams or sign in a controller or the stats will be disable. Same as the two controller method; once the game starts, you cannot switch teams or sign out a controller when already playing with a friend.

*Note* You do not have to finish the game to get the achievement. You just need to get the necessary requirements during the game. Once you get the stats you need, the achievement will pop up.

You can change the difficulty to Rookie but it isn't actually necessary when the sliders are in your favor. If you are going for other achievements, I recommend changing the time limit of the quarters to as long as you need seeing as to how you do no have to finish the game more many of the achievements.

Finally, it is slightly annoying when the player you are using magically gets substituted. In the begging of the game I highly recommend going to the menu, then "Coaching," then "Coach Settings," and putting the following to MANUAL: Timeout, Substitution, Late Game Fouling.

Adjust slider for 3 pt shooting to 100.
Doesn't matter what team you use as most guards will make 3's but if you need a push in a teams direction just get Boston. Ray Allen went 22/22 with me.

Most important!
The quarter length has to be NO LESS than 5 min quarters.

The other solution doesn't mention this but the cheevo will not pop unless you start the game with at least 5 min quarters.