The Lamborghini Untamed Add-on for Need for Speed: Hot Pursuit has 4 achievements worth 75 gamerscore.
Take 3 pictures of the Lamborghini Countach
Reach top speed in a Lamborghini Diablo on a coastal road
Use a full bar of nitrous in one go in the Lamborghini Sesto Elemento
Get Gold or Distinction in all Lamborghini Pack events