Here is the full list of all 50 Speed Kills achievements.
Repaint your car.
Fly out of the track 100 times.
Explode while flying.
100 kills.
500 kills.
1000 kills.
Buy all of the vehicles.
Unlock all championships.
Maximum upgrade of any vehicle.
Maximum upgrade of all vehicles.
Kill all of your opponents in the race at least once.
Collect $200 000.
25 restarts of the race.
50 respawns.
Win a race.
Win 10 races.
Win 50 races.
Win all of the races in a division.
Win a tournament.
Become a champion on Trantorus.
Get killed 100 times.
Use Nitro Boost 500 times.
Earn 100 points.
Earn 500 points.
Earn 1000 points.
Put 100 mines on track.
Use oil 100 times.
Perform 10 Triple Kills.
Get a promotion to Division A.
Kill somebody while using Double Damage power-up.
Collect Repair Bonus power-up 50 times.
Buy an Antigrav.
Finish second 50 times.
Get killed by a mine 20 times.
Collect $10000 in Money Pickups.
Collect 50 Ammo Clips on a track.
Win a race with a gap of less than 1 second from the runner-up.
Fail a Division 3 times.
Win Navius Prime Championship on Marauder truck. You must drive Marauder on all of the tracks in this tournament.
Win the same tournament twice.
Win the same tournament three times.
Win 3 races in a row.
Win 10 races in a row.
Win a race with a gap of at lest 15 seconds from the runner-up.
Pick up Speed Boost 100 times.
Win Trantorus Championship on Viper or Razor antigrav. You must drive Viper or Razor on all of the tracks in this tournament.
Win Angkor Championship on Lynx sportscar. You must drive Lynx on all of the tracks in this tournament.
Win a race on Void XIII on your debut.
Win a race on Navius Prime on Hound or Wolverine sportscar.
Win all of the championships: Gold on all of the planets.