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