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