Here is the full list of all 101 Little hidden city achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
the end of the game
find basketball
find inflatable pool
find tractor
find cat
find medical bed
find wheelchair
find camera
find pointer
find statue
find power station
find satellite_talk
find flower_palicious
find electric car
find bicycle
find solar_battery
find water_motocycle
find gazebo
find telescope
find sculpture_rock
find slide
find air conditioning
find motorcycle
find football_ball
find VOLGA
find TV
find traffic light
find swing
find boat_old
complete a level gas station
find barrel
find engine
find canister_2
find muffler
find part of the train
find haystack
find wheel
find extinguisher
find strut
find hovel
find canister
find army trailer
find spare part
find wheel_2
find logs
find soona
find old car
find equipment for garage
find Jack
pass_level_supermarket
find bucket_washing brush
find bank_register
find handbag_female
find moped
find soft toy
find drawer
find sink
find bananas
find steak_sibs
find jacket
find shoe
find trolley
find basket
find carton
find stool
find fish
find cake_shocolate
find pac_products
find eggplants
find watermelon
pass_level_country house
find watering can
find tools
find log
find stairs
find light
find bucket of apples
find potty
find plant_in_roof
find watering can_2
find Boots
pass_level_busstation
find stroller
find newspaper
find bicycle_old
find nameplate
find bottles
find shoes
find suitcase_02
find suitcase_opened
pass_level_apartment
find strap
find suitcase
find umbrella
find hat
find book
find coat
find tube
find bag
find magnifying_glass
start the game