Stuntman: Ignition

This achievement requires you to "String it" for every movie scene in the game. That is 36 full combos.

The two things that you will use the most to keep your string going are drifts and near misses.
Each level is a driving map with stunts laid out, but if you watch carefully it's also laid out with objects at the furthest 2 seconds away from eachother. What you will want to do is find the path that lets you drive close to each object so that a near miss keeps your string going. If you find there are no objects but you are in an open enough area or see a turn coming up, drift. If you are on a bike, instead of trying to drift when you have no objects nearby, you can do a wheelie.

Keep in mind that you are allowed to miss some of the stunts and still get 5 stars, as long as a reshoot of the scene is not called for. If you find going for a stunt repeatedly causes you to lose your streak, don't bother doing it. For less practiced stuntmen this is often the case for 180 Reverses.

Just to add to the other guides, you can 5 star scenes with easy mode on (you turn it on by pressing right bumper on the screen before a scene starts).

This gives you double the strikes you would usually have. The only catch with easy mode is that it halves your score so as long as you don't lose your string, you will still get 5 stars.

Knowing when to skip some key stunts is the secret to unlocking this achievement. It took me around two weeks of trying. The majority of that time was spent performing each scene again and again learning the triggers for the next piece of action, the best line through the whole piece and where I could pick up extra stunts to keep the combo flowing.

Your biggest weapon in the fight to unlock this difficult achievement is the 'close' stunt. Incredibly easy to perform and countless chances to unleash it in every scene. Practice until you are the master of handling the vehicle for the given scene. You'll then be able to throw your machine as close as you dare to obstacles and walls at the last minute to maintain your combo.

This is a must in the more powerful vehicles which are prone to power sliding much more easily and being more difficult to reassert control over after a high speed manoeuvre.

It will take some time, but it's an immense satisfaction once you unlock this one as it really is an achievement you have to earn, and not 'boost'.

Stringing every track is the aim here; You have to run one full combo from start to finish.

This may seem like a daunting task, but the game-dev's aren't all that evil. At most, the objects are a hairs-breadth away from ending your combo's. Just make sure you pass close too all of the combo-items, and try to maintain as high a speed as possible.

You WILL lose your combo a couple of times, but don't lose hope. All of us have been there, you'll get it eventually.