The Porsche Expansion Add-on for Forza Horizon 2 has 15 achievements worth 500 gamerscore.
Complete 40 events in Porsches.
Win a race in the wet in a 1982 Porsche 911 Turbo 3.3.
Complete 10 events in the same Porsche.
Complete 4 events in the 2014 Porsche 918 Spyder.
Complete 4 events in the 1987 Porsche 959.
Complete 4 events in the 1970 Porsche 914/6.
Complete 4 events in the 2003 Porsche Carrera GT.
Complete 4 events in the 2015 Porsche Macan Turbo.
Tick off 5 items on the Porsche Bucket List
Pull off 30 Near Miss Skills in the Porsche 911 Turbo S.
Pull off 20 Drifts in the 2015 Porsche Cayman GTS.
Obtain your first Porsche.
Complete the Porsche Bucket List
Earn 25,000 Credits in Rivals Mode with the Porsche 911 GT3 RS 4.0.
Earn 20 Clean Racer Skills in the 1989 Porsche 944 Turbo.