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