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