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.
Online Professional
Style Racer Badge
Platinum Champion
Gold Champion
Rank 1
Race Against the Clock
Gotham Hero
Pro Racer Badge
Exotic Car Club
Photographer
Track Builder
Silver Champion
Lamborghini Owners Club
Ferrari Owners Club
Steel Champion
Bronze Champion
Rank 10
Rank 5
Gotham TV Sports Fan
Arcade Player
Tournament Qualifier
Cat Champion
Team Cone Capture Champion
Mouse Master
Cone Capture Champion