NBA 2K7

Choose the LA Lakers and play against the CPU as the Boston Celtics. Set the difficulty to Hall Of Fame, and the quarters to 7 minutes or more. When the game starts, go into the Sliders menus, put all of yours up to 100, and all the CPU team down to 0. Make sure you keep Kobe Bryant on the court if possible and just shoot 3 pointers with him. You should be able to get the Wilt Chamberlain achievement, the Kobe Bryant achievement, and the Celtics vs Lakers Rivalry achievement, and potentially a few others, if you don't have them already.