Here is the full list of all 22 Car Demolition Clicker achievements.
Beat Darkside Truck
Obtain all other achievements (without post-release ones)
Buy final weapon
Collect 50 faction points for "Observers" faction
Use a perk
Unlock Observers faction
Collect 50 faction points for "The Mob" faction
Use reset option
Collect 1000 faction points
Buy final drone
Buy 4-gun drone
Buy a 3-gun drone
Hold 10 milion $
Visit ice cave stage
Buy a 2-gun drone
Collect 50 faction points for "Lab Rats" faction
Visit proving grounds stage
Visit gas station stage
Destroy a neon sign
Visit construction site stage
Fill all drone slots
Destroy your first car