Here is the full list of all 13 Obliteracers trophies - there are 9 bronze, 3 silver and 1 gold.
Join an online match
Take out 1000 racers
Take out 250 racers while driving backwards
Perform a 360 mid-air and stomp a victim on the landing
Take out eight racers at once with the Shockwave
Perform a 720 while drifting
Win every round in a Survival match
Barbecue a bot racer carrying an armed Arc Zapper
Host and win an online match
Earn all bombs in career mode
Take out eight racers at once with Space Lube
Absorb five pickups in a single round
Take out your first victim