Choose your favorite track in world tour mode and race it repeatedly (do not retry). Continue, then repeat.

Assassin Compact Car
Get 15 Takedowns to unlock the Assassin Compact Car.

Assassin Muscle Car
Get 30 Takedowns to unlock the Assassin Muscle Car.

Assassin Coupe Car
Get 60 Takedowns to unlock the Assassin Coupe Car.

Assassin Sports Car
Get 100 Takedowns to unlock the Assassin Sports Car.

Assassin Super Car
Get 150 Takedowns to unlock the Assassin Super Car.

Classic Hotrod
Get a "Gold Medal" rank in all special events to unlock the Classic Hotrod.

Custom Compact Car
Get 10,000 Burnout points in world tour mode to unlock the Custom Compact Car.

Custom Coupe Car
Get 50,000 Burnout points in world tour mode to unlock the Custom Coupe Car.

Custom Muscle Car
Get 25,000 Burnout points in world tour mode to unlock the Custom Muscle Car.

Custom Sports Car
Get 100,000 Burnout points in world tour mode to unlock the Custom Sports Car.

Custom Super Car
Get 200,000 Burnout points in world tour mode to unlock the Custom Super Car.

Compact DX Car
Get 4 Gold Medals in world tour mode to unlock the Compact DX Car.

Muscle DX Car
Get 10 Gold Medals in world tour mode to unlock the Muscle DX Car.

Coupe DX Car
Get 18 gold medals in world tour mode to unlock the Coupe DX Car.

Sports DX Car
Get 25 Gold Medals in world tour mode to unlock the Sports DX Car.

Super DX Car
Get 32 Gold Medals in world tour mode to unlock the Super DX Car.

Muscle Types 1, 2, and 3
Win a Gold Medal in the Silver Lake Compact Grand Prix to unlock the Muscle Types 1, 2, and 3.

Coupe Types 1, 2, and 3
Win a Gold Medal in the Waterfront Muscle Grand Prix to unlock the Coupe Types 1, 2, and 3.

Sports Types 1, 2, and 3
Win a Gold Medal in the Vineyard Coupe Grand Prix to unlock the Sports Types 1, 2, and 3.

Tuned Compact
Win a Gold Medal in Downtown Race 1 to unlock the Tuned Compact.

Tuned Coupe
Win a Gold Medal in the Vineyard Face-Off to unlock the Tuned Coupe.

Tuned Muscle
Win a Gold Medal in the Kings Of The Road Race to unlock the Tuned Muscle.

Tuned Sports
Win a Gold Medal in the Continental Run Race 2 to unlock the Tuned Sports.

Tuned Super
Win a Gold Medal in the Island Paradise Face-Off to unlock the Tuned Super.

Modified Compact
Win a Gold Medal in the Waterfront Face-Off to unlock the Modified Compact.

Modified Muscle
Win a Gold Medal in the Mountain...