Blur

To get this achievement you need to beat the natalya in her one-on-one just like the achievement says. Tihs can be done on any difficulty and is obviously easiest on easy. To do this you first need to unlock her races by getting 110 lights, to get lights you need to win races and do fan runs. Second you need to unlock their one on one by meeting her career demands, these are reverse shunting 5 cars, hitting 2 or more cars with a barge, shock 10 cars, and complete the fan run in event 6. These are all easy to do on easy, just remember to pick up barges and use them while there are 2 or more cars around you and always fire shunts backwards.

For this race you have to use the BMW concept 1 series. Natalya will pull ahead of you on the first few corners, you want to grab then nitro and don't take the jump on the left, instead grab the bolts on the right and try to get behind her, grabbing a shunt on the right as well. When you go through the tunnel grab the lightning in the middle (if your not in first), she will almost always hit one lightning. Pull ahead of her and then start getting shields to protect from the lightning that she uses. And remember if you cannot beat her to the finish recking the rivals car will give you an automatic win, so if you can, wreck away. The easiest way to wreck your rival is to collect 3 shunts and put the extra power for shunt mod on then shoot all 3 shunts into your rival at the same time.