NBA 2K8

Just a note, Inbred Friend's solution to the 15 blocks achievement (creating a team by duplicating Yao Ming 12-15 times and playing that team against a team of short PGs, like all Sarunas Jasikevicius [the first PG on the free agent list]) won't work for this achievement. The game must recognize that you aren't really playing with Yao Ming, only with a Yao Ming duplicate.

However, playing the Rockets against your created team of short point guards will work. 12 minute quarters, bring shooting fouls all the way down, turn off fatigue, raise your blocking and contest shot attributes all the way, and bring all of the CPU shooting to 0 (maximizing your rebound opportunities). Also, turn off defensive 3-seconds calls and goaltending.

Play as Yao on both ends of the court and just sit in the paint on defense. Notice which Sarunas you are matched up against and sag off him. Your length will help you close the gap quickly and you should be able to get into a flow of at least 2 blocks a quarter. Just get a feel for how much you can sag off while still being able to close down on a quick shot.

The points will be easy since you can post up Sarunas every trip up the court, and try to switch to Yao every time a shot goes up and get in position for a board. If you need to, start bricking 30 footers with your other teammates and get Yao in a position for more boards.

I had the achievement 6 or 7 minutes into the 2nd quarter.

Same strategy works for the Dwight Howard achievement as well.