Case Achievements are stackable, so it's best to just start it on Hard. If you're halfway through a case and have to go anywhere, then dont retire. Just go directly to the dashboard and then when you restart the game you will continue on your last mission. If you retire you have to start that case again.

To get this achievement then just complete each mission within the case, each mission will have different objectives such as shadowing a car, smashing a car 100%, spinning the car round and stopping beside it in the stated time.

Beginners Luck
* Breakfast time
* The Cadet
* To the service area
* A new case
* A lot of questions
* Taking the initiative
* Suspicious behavior

You'll unlock this after the first case is complete, just go to single race, turn on nitro and boost it on a straightaway for five seconds.

You dont need to do this for any amount of time, you just have to hit 350 km/h. After you have finshed Traffic Control, you will have unlocked a car that is fast enough to do this speed, again just put onto single race, 'Around the Reservoir' and nitro it on the big straightaway.

Just drive in reverse for 100 metres without hitting anything. I did this on my first single race as there was no traffic, but its pretty simple so you can get this in a mission.

Use your whole tank of nitro in one burst, I put it onto single race, no traffic and nitro on and put track as 'Around the Resevoir' in circuit, after going round the first corner I just held and till nitro ran out.

Once you have finished the Case 'Mere Chance' you will unlock 'Around the Quarry'. Just put it onto 10 laps and choose the 'Semir' and it will be covered in dirt by about the 7th lap or so.

In single race the is a track called 'Fast & Slow'. Once you have gone round the two big corners you will come to a roundabout then round it will be a tunnel. Just before entering the tunnel drive through the metal shed beside it. There is a couple more opportunities in the game to get this, but it's easier just doing it this way.

This has to be a computer opponent as I tried to do it with a second controller and it didnt work. Put it onto single race and pick around the quarry, 13 laps, and set the CPU difficulty to Easy. In the 13 laps I lapped every driver with ease so should be easy enough. I find that if you turn brake assist to full it makes it alot easier as well.

You will enter a sewer in a few cases but the main one is 'A Series of Accidents' and 'Plenty of Questions'. You can go back and select the mission after you have completed the game. When you enter the sewers you will come to a big pipe. All you have to do is loop the loop that bit of pipe, I didn't get it first shot as I was going too fast, so use a wee bit of nitro and just steer round it and its yours.

You get this in the Case 'A Series of Accidents'. There is a mission called 'Plenty of Questions' where you have to chace a yellow car into the sewers and halfway through the sewers you go over a jump to another sewer. If you dont hit it right, then it doesnt unlock so just restart until you get it.