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