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