There is no guide for this game yet. But apparently it is EASY POINTS! 

Big Ham! - 25 points

Complete every Photo Op

Mack Track Medalist! - 25 points

Score 4000 points in the Mack Track Challenge event

Daring Devil! - 50 points

Score 5500 points in the Mater the Greater event

Ole'! - 50 points

Score 25000 points in the Materdor event

Tokyo Triumph! - 50 points

Score 25000 points in the Tokyo Mater event

Drift Master! - 25 points

Score 4500 points with a single drift

Crowned Karter! - 25 points

Win every Guido Kart event

Luigi's BFF! - 25 points

Win every Tire Find event

A Real Go Getter! - 25 points

Win every Transporter event

Perfectionist! - 25 points

Win every Autocross event

Mooo-ving Along! - 25 points

Win every Tractor Stampede event

The Law! - 25 points

Win every Sheriff's Pursuit event

Podium Perfection! - 25 points

Win every circuit race event

Sprinter! - 25 points

Win every Point to Point Race event

Pluggin Away! - 25 points

All Sparkplugs collected from all races

Mini Master! - 25 points

Win every Mini Game event

Team Player! - 25 points

Win every Academy Challenge

Santa Carburera Champ! - 100 points

Beat Candice

Big City! - 100 points

Beat Stinger

Autovia Avenger! - 100 points

Beat El Machismo

The Champ! - 100 points

Beat Chick Hicks for the Title

Oveer Achiever! - 100 points

Earn every achievement