Harder achievements: 10 Heat, Multiplier and Bigger Points | Achievements / trophies NfS Rivals Guide

For each successful usage of pursuit technology you'll get valuable points

All those achievements can be completed on single try. Make sure that you're in Rival career mode and that you are prepared well. Make sure to but one of the best cars in the game (my recommendation is Ferrari F12 which is much more durable than its competitors) and then maximally equip it (upgrade car's parameters and purchase pursuit technologies).

When you thinks that you're ready, go to the main highway located in the central part of the map. Start using pursuit technologies in the area to damage or completely eliminate police cars chasing you (I especially recommend ESF and Stun Mine technologies).

Regularly return to the nearest repair shop

During accumulating points and increasing multiplier, try to stay at the short distance (up to one mile maximum) to the one of the repairs shops near the highway, regularly making turns and returning to it in order to repair car and replenish pursuit technologies.

Perform all these actions until you fulfill requirements of three described achievements which is: gather half million SP, advance to 10th pursuit level and increase the multiplier to value of 10. Quickly use EasyDrive navigation in order to plan the route to the nearest hideout and go there at once, not trying to evade the police.