Here is the full list of all 17 Car Washer: Summer of the Ninja achievements.
Wash Your First Car.
Hire a friend to help out.
Stop the flaming ninja.
Survive the killer ninja.
Hire cheerleaders.
Hire all the bikini cheerleaders.
Get all the best equipment.
Defeat the ninja once and for all.
Protect your cars from attack.
Wax 10 cars.
Summon the ninja's greatest enemy to your aid.
Wash lots and lots of cars.
Defeat every kind of ninja.
Earn lots of money.
Score more than $1,000 in A Week to Remember.
Clear Race to $10,000 in less than 15 days.
Reach day 50 in Endless Summer.