Here is the full list of all 12 Trailblazers achievements.
Finish a race in 1st place.
Finish 3 laps in a row in 2nd place.
Complete all Story chapters.
Complete all Cup chapters.
Unlock all Tournament Tokens.
Unlock all Gold Tournament Tokens.
Playing as Boo, finish in 6th place for every single lap of a race.
Playing as Volta, finish in 1st place in a one-lap race on Robo Ringway.
Playing as Empress, drive at max boost for 15 seconds.
Score the most Paint Points whilst on the red team on a city track.
Activate 50 Paint Gates in a Gate Chase race.
Finish a lap in 10 seconds or less on Robo Ringway.