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