Need for Speed Underground 2 (GBA)

All cars, tracks, and upgrades
Successfully complete "Go Underground" mode to unlock all cars, tracks, and upgrades.

Drifting tip
When Driving on the Drift, don't use the handbrake.

Gain a few more seconds round tight corners
While going round a tight corner try to brake quite early-it will give you more time to accelerate.

Nissan 350Z
Successfully complete all 80 events and have 17 cars to unlock the Nissan 350Z.

Nissan Skyline
Drive over 500 miles.