Here is the full list of all 40 Roundabout achievements.
Complete your first eSports Speedrun Challenge.
In "Limocide", take out 50 pedestrians.
In "Destruction Derby", take out 8 cars.
Unlocked the Beary Nice Music Box.
Drive the entire "classic" length of Desert Limo without crashing.
In "The Great Hunt", find 6 regions.
In "Run Like Crazy", get 150 yards away.
Unlocked the Pickup Finder.
Unlocked the Multiplier Freezer.
Die 360 times.
Aggressively warn a dozen pedestrians with the Trafffic Coner.
Reach 100% completion on a mission.
Drove straight for Beth.
Purchase a pet eagle.
Unlocked the Traffic Coner.
Make a huge mistake.
Reach a 35x multiplier.
Unlocked the Inflatiboat For Cars.
Purchase something from The Chrome Dome.
Stand still for a minute of silence at The Memorial.
Follow a lady into the big smoke.
Purchase some property.
Unlocked the Reverser Wheel.
View the "How's Your Driving" screen outside of the DMV ride. Useful, isn't it?
In "Ball Bouncers", bounce the ball at least 12 times.
Collect every star in a single ride.
Survive the Mountain Fair Demolition Derby without exploding.
Honk your horn 500 times, then honk your horn 500 more.
Revolve over 53,596 times.
Get a better eSports Speedrun Time than the No Goblin team.
In "Death from Above", survive for 30 seconds.
In "Farming Simulator 1977", complete your farming in under 40 seconds.
Collect every Cash Stash.
Accomplish every Sick Jump.
Discover all of the horns.
Purchase every hat and paint job.
Collect every star in every ride.
Purchase every property.
Reach 100% completion for the entire game.
Complete an eSports Speedrun without exploding.