Need for Speed Payback

This is a story related achievement.

During Chapter 4, you'll unlock an offroad questline. Complete all the events within the questline and you'll unlock the achievement. These are fairly straightforward, the only one that might be difficult enough will be the fourth one. As long as your car is upgraded enough, you should be fine. Watch out for rocks.

Note that side bets are deducted no matter what. So if you do restart the race or lose, you lose the initial investment. So if you do have trouble on a race and have to restart a few times, keep in mind you lose your side bet money each time.