NBA 2K12

To start make you have to make the game quarters at least 5 minutes each (I recommend making them bigger to be safe, because the achievement pops up when reached the goal, you don't have to play the whole game), and put the level on Rookie

Also, you can do this in 2 ways:

1- With 2 controllers
2- Against the CPU

1st way - With 2 controllers:
Turn Shot Clock off in the Rules so you don't have to stress with getting things done in 24 seconds at a time (you can also turn almost all rules off so you don't have to worry with 3-seconds, etc...), you should also change Blocking to 100 in the user sliders and Steal to 100 Too

a very easy way to get the 5 Blocks : just place your defending player in front of the player with the ball and when you press the button to shoot, press the button to block at the same time... it's very easy

Getting the 5 steals is even easier, just give the ball to a player in the opposing team, make him start to dribble and then just get in front of him and press the steal button... if you are getting called on fouls just change the foul sliders to 0

2- Against the CPU

It's a bit more difficult, but not much... you have to edit the Sliders like I explained above

The hardest part is getting the blocks, to make it easier you should edit the team you are going to face and make them all 5"3 so every player on your team has an height advantage over them... then it's all about timing and defending

for the Steals it's pretty much the same as above, just go head on to the player with the ball and press the steal button