The Porsche Unleashed Add-on for Need for Speed: Hot Pursuit has 4 achievements worth 75 gamerscore.
Win an online event in the Porsche 911 Turbo
Drive for a mile (1.6 kilometres) on shortcuts in a race and win it in the Porsche 959
Drive the Porsche 911 Speedster for 20 miles (32.1 kilometres)
Get Gold or Distinction in all Porsche Pack events