Hit a X 10 Multiplier

As you win races or evade the cops, your multiplier will go up. For this trophy, you need to hit a 10x multiplier. Even if you start with a car that brings your heat level up just by getting behind the wheel, your multiplier still only starts at 1. This trophy can be achieved easily after you beat the level 20 speedlist (Grand Tour) once. You'll need to play that race at least one more time. Since your multiplier goes up 9 times during the race, simply get yourself to a X2 multiplier before you start the race and you'll have this trophy by the end of the race. I've had a 10X multiplier when I did the race like this. Even better, it ends right by a hideout so you can bank your points right away.

Another good spot to get this if you're having trouble on Grand Tour, is during Speedlist Level 16 (Wolf's Clothing) when you get the Koenigsegg Agera R police car. The car has great stats and you can find a repair shop near a hideout for you to pop in and out of until you get to a 10X multipler. I did this using the repair shop and hideout just south of the Kingfisher bridge after I wrecked the requisite number of cops. The airfield by Sun Valley Run in the south west portion of the map is another good spot to attempt this.