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