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