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