Go to the options menu and change the difficulty to easy. It is almost impossible to lose on easy because the AI drivers don't drive at full speed.

Change the difficulty to hard in the options menu and finish a race on any place except the last. I suggest the Trojan Horse vehicle because it has a good speed and is easy to control.

After changing the difficulty on easy in the options menu, you won't have any trouble winning every race on each of the nine tracks.

This sounds hard but is actually very easy. I did this on the Desert track. All the tokens are in plain sight and almost impossible to miss. You will most certainly on your first try.

You don't have to win the races! So don't worry about your position and take your time to collect every token on each track. Most are on the road but sometimes one or two are semi-hidden behind an obstacle. Make sure that it says "[Token symbol] x 8" at the result screen on the end of the race. There is no way to actually see what tokens you have collected on what level. If you exit the game and go back in, the tokens will appear again and might mess up your count. You literally must get every single one of them in their respective locations. Be careful, slow, and write down what levels you have gotten all of them on.

Choose a different vehicle type for each race you have to win. That way you won't have to drive for races then necessary.

Choose the Desert track and drive as slow as possible into one of the tornados. You have to almost stand still. The slower you are, the higher the tornado will throw you. It may take 2 or 3 tries to get the right speed.

I did this while going for Omega Man. By the time I destroyed all cactus plants the three opponents had already finished the race. Collect a few bones and throw one at each enemy that is now standing still.

Automatic activated power-ups like Sticky Tires don't count! Just win any race without touching the power-up symbol or the "direction-bone" on the right side of the screen. Don't worry about picking up power-ups. As long as you don't activate them, you'll unlock the achievement.

Choose the male character for 6 races. You don't have to win.

Choose the female character for 6 races. You don't have to win.

You can collect a maximum of 8 tokens per gather race. By the time you unlock Hungry Man, you've already collected at least 72 tokens. That's three and a half more gather races to go. The achievement unlocks mid-race after collecting the 100th token.

You can try to get this legit by using the shortcut at the end of the track (simply turn left after the jump instead of driving the long slope) OR you can "dashboard" by pressing the "Home"-button in the middle of the second lap and wait around 20 seconds and then hit the "Back"-button and continue the race. All obstacles, power-ups and time will be reset, but you'll keep your current position and lap. It didn't work for me on the last lap, so make sure to do it on the second lap.

Destroy all cactus plants (the large AND small ones) on the Desert track. The achievement unlocks mid-race.