NBA 2K8
50 Achievements
1,000
Xbox 360
Defensive FG%
Achieved by holding the opposing team's FG% below 40% with any team.
15
How to unlock the Defensive FG% achievement in NBA 2K8 - Definitive Guide
Plug in a second controller and go to town or set the computer to very easy. Either way, it's not a hard achievement to get.
For this you need to hold your opponent's field goal percentage under 40. With CPU slider's adjusted to 0 they will attempt plenty of shots and miss every one of them.