[Mobhack]

Oh - another thing you can do is respin the objectives at game setup, in order to place them where its better for the AI and make your getting to them more difficult. Or manually move them using the edit map functions.

Especially with timed objectives, putting them nearer to the AI side will make it get them and the timed points early. Thus making you have to be more agressive perhaps than you wanted to be and have to take the battle to him rather than sit back and snipe at him?.