Talk:Defense/@comment-24828656-20160513040539/@comment-10875806-20160513045740

No, defense missions are more like "stationary exterminates." You must kill all enemies in the wave before proceeding. There is no time limit, even when there are only a few remaining enemies left.

Interception missions on the other hand often very well handled by the strategy you suggest. There are only two primary objectives to them: capture the amount of points necessary (maintain control of the points for a fixed period of time), and then kill any enemies that are alive after you have finished capturing your points. In fact, after there are only 10 enemies left alive, there is a count-down to force the next wave, so you don't even have to kill those last 10.