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