The Porsche Expansion Add-on for Forza Motorsport 6 has 19 achievements worth 250 gamerscore.
Finish "The Future" Era
Finish "Motorsport Next" Series
Finish "Supercar Synthesis" Series
Finish "Growing Excellence" Series
Race the Cayennne or Macan in Multiplayer or Free Play 10 times
Race a front-engine Porsche in Multiplayer or Free Play 10 times
Race a mid-engine Porsche in Multiplayer or Free Play 10 times
Set a lap time under 1:30 at VIR Full
Play VIR in Multiplayer
Finish "The Evolution" Era
Finish "Racing Dominance" Series
Finish "Building Innovation" Series
Complete 1 Porsche Showcase
Finish "The Origin" Era
Finish the Porsche Anthology Initial Experience Race
Fully explore the Porsche 919 in Forzavista
Equip a Porsche Badge
Complete all Porsche Showcases
Complete 40 laps on VIR in Multiplayer