I don't really know why these are "achievements", as this one plus the below ones can all be obtained during the tutorial.
Just press to boost for this achievement.--------------------------------------
- Fodder are the black/greyish cars that you can just take out with a single hit. They will add boost to your meter.- The enemy cars are orange. Just take one out with the help of the tutorial lady.- You will see a little head filling as you use your boost, the more boost you fill the faster this head will be at 100% and you can use your RUSH with .- When a enemy or teamplayer gets smashed, taken out or just wrecked, he will leave a little tombstone behind. Driving through those tombstones will fill your boost meter. Do that 5 times.- When you jump and on your way down but still in the air, you can press the boost button - - to accelerate the drop and smash to an enemy below. Do this once for the achievement.