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