Here is the full list of all 63 Human Fall Flat Legacy (Windows) achievements worth 1,000 gamerscore.
Travel 25km
Travel 10km
Carry objects for a total of 1000m
Feed an appliance with power from 3 batteries in "Power Plant"
Complete "Water" diving head-first
Don't get wet while surfing down the mountain in "Water"
Light up the lighthouse in "Water"
Complete "Steam"
Ride 3 complete revolutions of the big wheel in "Steam"
Break the ladder in "Steam"
Place 5 pieces of debris in a dumpster
Complete "Ice"
Complete 1 complete revolution on the ski chairs in "Ice"
Complete the slope jump in "Ice" with 2 snowboards strapped to your feet
Complete the seesaw puzzle in "Ice" without using an ice cube
Reach the big wheel in "Steam" without using the crane controls
Complete "Dark"
Complete "Dark" without moving any planks that are barring doors
Hold on to the EXIT lid after you flick the switch in "Dark"
Climb the Clock Tower in 40 seconds in "Dark"
Complete "Water" diving feet-first
Complete "Aztec"
Pass the pendulum obstacle course in 60 seconds in “Aztec”
Walk on the rolling ball to bypass a puzzle in "Aztec"
Climb to the top of the tree with the birds nest in “Aztec”
Complete "Power Plant"
Use any of the ground vehicles to travel 1km
Deliver 10 pieces of coal to the main island in "Power Plant"
Steal the battery from the statue in "Power Plant"
Climb 100m
Jump 1000 times
Enter the dock with the ship backwards in "Water"
Use any of the boats to travel 1km
Use the row boat to get to the cargo ship in "Water"
Complete "Castle"
Ring the castle bell in "Castle"
Zipline from the church tower in "Castle"
Parkour fluidly from the alley to the blacksmith in "Castle" without touching the ground.
Break 4 walls without using any gadgets in "Demolition"
Collect all gems into a pile in "Mountain"
Stack all 4 boxes in the level "Carry"
Align a flipped bench with a wall
Ride 50m in a dumpster
Launch yourself with the catapult in "Castle"
Complete "Demolition"
Unleash the boulder gate in "Demolition"
Use the window on your left instead of smashing the wall in "Demolition"
Complete "Mountain"
Get rid of the speaker set in "Mountain"
Use the rope to go above the abyss in the level "Mountain"
Complete "Carry"
Complete "Train"
Complete "Mansion"
Take a big shortcut in the level "Mansion"
Respawn 100 times
Travel 1km
Stand on the head of the statue in the intro
Jam a door and go through it in "Carry"
In "Water", get out of the water in 100ms to avoid drowning
Short-circuit the wires in "Power Plant"
Drown 10 times
Fall and respawn once
Complete "Mansion" through to "Aztec" start-to-end in one run