Here is the full list of all 29 Slipstream achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Complete everything.
Complete all possible routes in Arcade Mode.
Stay on the slipstream for more than 15 seconds in any mode.
Reach every exit defeating all the rivals along the way.
Visit all the tracks in Arcade Mode.
Get to all the exits in Arcade Mode.
Defeat Alex in Metropolis.
Defeat Norman in Parthenon.
Defeat Tofu Boy in Akagiyama.
Win a cannonball race of all 5 secret tracks, in any order
Win a cannonball race of all 5 nighttime tracks, in any order.
Defeat all the rivals in a cannonball race of 5 or more tracks.
Defeat David in Neon City.
Win a battle royale match.
Win a race with every car model in Quick Race Mode.
Win all the races in all cups.
Win the Diamond Cup.
Win the Emerald Cup.
Win the Sapphire Cup.
Win all the races in any cup.
Win the Ruby Cup.
Win a race in Grand Prix mode without any car upgrades.
Win a cannonball race of 15 tracks.
Win a cannonball race of 5 or more tracks.
Defeat Camilla in Highgate Cemetery.
Complete a stage in arcade mode without touching anything.
Defeat every rival character in Arcade Mode at least once.
Defeat all the rivals in a single Arcade Mode run.
Get to the finish line in Arcade Mode.