Here is the full list of all 21 BlazeRush trophies - there are 21 bronze.
Break the sound barrier.
Drop a slime while in the lead.
Do a NO SCOPE, while doing a 360.
Spend 2 seconds in the air.
Rise from the last spot 5 seconds before the finish.
Overtake the leader a second before the finish.
Be the king for most of the race.
Be the leader and lose it all 5 seconds before the finish.
Hit yourself with every possible weapon.
Join an online party.
Die a hundred times.
Win in each of the three modes.
Kill the opponent with each weapon but the slime.
Destroy 50 cars with the autogun.
Destroy 40 cars with the saw.
Destroy 30 cars with the missile.
Destroy 20 cars with a soundwave.
Unlock all cars in career.
Defeat the boss.
Complete all career missions.
Complete your first serious competition.