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