Here is the full list of all 40 Sakuna: Of Rice and Ruin achievements.
Complete the game.
Climb to the highest roof of the tallest house.
Have a dinner comprised of 5 desserts.
Attempt to have a dinner comprised entirely of water.
Collect all agricultural scrolls.
Rest on the porch in each of the four seasons.
Achieve an above-standard aesthetic when harvesting.
Create fertilizer by throwing in over 100 materials.
Trade 1,000 ears with the capital.
Harvest over 500 rice plants at once.
Create 10 kinds of garments or headgear at the loom.
Become fully proficient in one fighting skill.
Create 20 kinds of tools at the forge.
Deal over 10,000 damage with one attack.
Gather from every gathering spot on the island.
Release 30 hidden powers from equipment.
Eat 50 different types of food.
Collect all combat scrolls.
Achieve an above-standard yield when harvesting.
Successfully parry an enemy attack 30 times.
Create white rice with the mortar and pestle.
Achieve a crash combo of 5.
Crash 5 enemies together in one fell swoop.
Achieve a crash combo of 3.
Swing behind an enemy with the divine raiment 100 times.
Swing behind an enemy during an aerial combo twice.
Have a dinner comprised of all 5 types of courses.
Explore every last inch of Hinoe Island.
Debuff an already-debuffed enemy with a raiment skill.
Achieve an above-standard taste, stickiness, and hardness when harvesting.
Achieve an above-standard aroma when harvesting.
Raise your rice level to 50.
Pray for every type of weather.
Have a dinner comprised of 5 rice dishes.
Have a dinner comprised of 5 types of alcohol.
Practice in the training hall 10 times.
Gather every animal at your home.
Talk to someone while carrying the manure pail.
Clear the aphid invasion.
Clear the lowest floor of the Amagaeshi Shrine.