Full list of all 25 Project Gotham Racing 3 achievements worth 1,000 gamerscore.
The base game contains 20 achievements worth 900 Gamerscore, and there are 2 DLC packs containing 5 achievements worth 100 Gamerscore.
Platinum Champion
Gold Champion
Style Racer Badge
Rank 1
Online Professional
Photographer
Gotham Hero
Gotham TV Sports Fan
Race Against the Clock
Pro Racer Badge
Silver Champion
Bronze Champion
Rank 5
Lamborghini Owners Club
Arcade Player
Ferrari Owners Club
Exotic Car Club
Steel Champion
Track Builder
Rank 10
Tournament Qualifier
Cat Champion
Mouse Master
Team Cone Capture Champion
Cone Capture Champion