Here is the full list of all 23 Turbo Dismount achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Play a Steam Workshop level.
Do ten strikes with the Bowling Pins.
Detonate ten mines in a single dismount on Run DMZ.
Do a successful barrel roll and landing.
Reach a record time on Skid Marks.
Cross the finish line on Skid Marks at 88mph.
Get hit by five different NPC vehicles in T-Junction.
Totally demolish a single vehicle.
Reach a height of 1000ft (305m) in Space Program.
Customize Mr. Dismount or a vehicle.
Launch three consecutive dismounts at max velocity.
View a replay in slow motion.
Lose only a single limb during a single dismount.
Perform 1000 decapitations.
Pull ten somersaults in a single dismount.
Launch 1000 dismounts.
Complete 100 dismounts with the Pink Lightning.
Totally demolish all vehicles (that can be demolished).
Drive through 1000 turbo pads.
Cut down 100 trees.
Nail it 100 times.
Try everything once.
Fully obliterate Mr. Dismount.