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