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