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