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