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