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