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