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