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