Project Gotham Racing 2

Beat Kudos Challenge on:
Steel    - Delfino Feroce
Bronze   - Ferrari 250 GTO
Gold     - Mercedes CLK-GTR
Silver   - Porsche 911 GT1
Platinum - TVR Cerbera Speed 12

Geometry Wars:
This neat little mini-game can be accessed by going into the Garage.
While you're in walk mode, go over to the arcade machine and press A.

 