Full list of all 79 Human Fall Flat achievements worth 1,960 gamerscore. It takes around 8-10 hours to unlock all of the achievements in the base game.
The base game contains 47 achievements worth 1,000 Gamerscore, and there are 8 DLC packs containing 32 achievements worth 960 Gamerscore.
Complete "Water" diving feet-first
Complete "Water" diving head-first
Complete "Power Plant"
Complete the game start-to-end in one run
Fall and respawn once
Stand on the head of the statue in the intro
Take a big shortcut in the level "Mansion"
Place 5 pieces of debris in a dumpster
Align a flipped bench with a wall
Jam a door and go through it in "Carry"
Stack all 4 boxes in the level "Carry"
Use the rope to go above the abyss in the level "Mountain"
Get rid of the speaker set in "Mountain"
Collect all gems into a pile in "Mountain"
Use the window on your left instead of smashing the wall in "Demolition"
Unleash the boulder gate in "Demolition"
Break 4 walls without using any gadgets in "Demolition"
Launch yourself with the catapult in "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.
Use the row boat to get to the cargo ship in "Water"
Enter the dock with the ship backwards in "Water"
Light up the lighthouse in "Water"
In "Water", get out of the water in 100ms to avoid drowning
Don't get wet while surfing down the mountain in "Water"
Short-circuit the wires in "Power Plant"
Feed an appliance with power from 3 batteries in "Power Plant"
Deliver 10 pieces of coal to the main island in "Power Plant"
Steal the battery from the statue in "Power Plant"
Respawn 100 times
Jump 1000 times
Carry objects for a total of 1000m
Drown 10 times
Use any of the boats to travel 1km
Use any of the ground vehicles to travel 1km
Ride 50m in a dumpster
Climb to the top of the tree with the birds nest in “Aztec”
Walk on the rolling ball to bypass a puzzle in "Aztec"
Pass the pendulum obstacle course in 60 seconds in “Aztec”
Hold on to the EXIT lid after you flick the switch in "Dark"
Climb the Clock Tower in 40 seconds in "Dark"
Complete "Dark" without moving any planks that are barring doors
Reach the big wheel in "Steam" without using the crane controls
Ride 3 complete revolutions of the big wheel in "Steam"
Break the ladder in "Steam"
Complete the slope jump in "Ice" with 2 snowboards strapped to your feet
Complete the seesaw puzzle in "Ice" without using an ice cube
Complete 1 complete revolution on the ski chairs in "Ice"
Complete "Thermal" while holding a gold bar
Enter the compound in "Thermal" without passing through the main gate
Attach all electrical cables in 35 seconds or less in "Thermal"
Throw one of each item in the final room into the fire in “Factory”
Complete the first half of “Factory” without turning any lights on
Throw all four radios off the level in “Factory”
Drive the golf cart off the edge of the level
Using ONLY the golf club, putt the ball in 3 strokes or less
Take the alternate route above the cave
Complete "City" level
Ride one of the vehicles for 10 seconds
Knock all 3 rag dolls off the level
Complete all 4 bowling lanes