Here is the full list of all 63 Car Detailing Simulator achievements.
Wash 500 cars
Overtime
Fix windows
Fix wheels
Fix body
Make money
Find turtle
Wash 100 cars
Fix ufo
Finish game
Get 15 rep
See credits
Wash 50 cars
Buy auto salon
Car 1 minute
Water computer
Use paint meter
Buy all upgrades
Pressure washer time
Stairs ride
Sell lower price
Get 10 rep
Use automatic polisher
Buy shed car
Repair garage
Buy garage
Use small brush
Find unique
Buy all toolkits
Use sponge
Get 5 rep
Fix seat
Wash 10 cars
Fix trash
Use trash can
Use sand paper
Long session
Buy seat toolkit
Return dirty
Use soft brush
Use wide brush
Buy wheel toolkit
Buy interior toolkit
Buy garage upgrade
Buy window toolkit
Get 2 rep
Fix scratches
Use hand polisher
Use flashlight
Buy finish toolkit
Open memory
Wash 1 car
Take photo
Buy body toolkit
Finish tutorial
Buy one toolkit
Use vacuum
Use window spray
Use seat spray
Use rag
Use pressure washer
Buy lights toolkit