Here is the full list of all 13 Obliteracers achievements.
Take out your first victim
Take out 1000 racers
Take out 250 racers while driving backwards
Barbecue a bot racer carrying an armed Arc Zapper
Join an online match
Take out eight racers at once with the Shockwave
Take out eight racers at once with Space Lube
Absorb five pickups in a single round
Win every round in a Survival match
Perform a 720 while drifting
Host and win an online match
Perform a 360 mid-air and stomp a victim on the landing
Earn all bombs in career mode