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