Acquire every other trophy.

Get a bronze medal in one time attack level.

Get a silver medal in one time attack level.

Get a gold medal in one time attack level.

Collect 5 CRUSH letters in one time attack level.

Get a bronze medal in one stunt level.

Get a silver medal in one stunt level.

Get a gold medal in one stunt level.

Collect 5 CRUSH letters in one stunt level.

Get a bronze medal in one survival level.

Get a silver medal in one survival level.

Get a gold medal in one survival level.

Collect 5 CRUSH letters in one survival level.

Get a bronze medal in a freestyle event.

Get a silver medal in a freestyle event.

Get a gold medal in a freestyle event.

Get a platinum medal in a freestyle event.

Win a race.

Win two different races.

Win three different races.

Win five different races.

Unlock Grave Digger.

Unlock Madusa.

Unlock Max-D.

Unlock El Toro Loco.

Unlock Monster Mutt.

Collect 10 CRUSH letters.

Collect 50 CRUSH letters.

Collect 100 CRUSH letters.

Collect 150 CRUSH letters.

Collect 250 CRUSH letters.