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