Full Auto

There are five races in the Rampages series. These races require you to destroy as many cars as possible and still finish the race within a target time. Your targets are just civilian cars, so they demolish quite easily, needing a single missile shot or a good ram at high speed to take them out.

I recommend outfitting your car with the Missiles and Machine Gun weapons loadout. The machine gun won't overhead, so you can keep that button jammed down, and just fire missiles as quickly as you can. You are more likely to have trouble meeting the time limits than not be able to reach the kills requirement. Try to use your weapons to destroy the targets rather than ramming them, since ramming will cost you speed and valuable time.

You need only meet the survivor (bronze) requirements for each of the five races in order to unlock the Achievement.