Here is the full list of all 60 Littlewood achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Find all Tarott Monster cards.
Complete all Personal Goals.
Visit the Edge of Solemn.
Donate all items to Museum.
Complete 150 quests.
Catch 2500 fish.
Get Married.
Discover All Tavern Recipes.
Unlock all town wishes.
Catch 2500 bugs.
Gather 4000 items.
Mine 6000 ores.
Harvest 4000 crops.
Unlock all ultimate upgrades at the Crafting Workshop.
Upgrade all structures and areas to 10 stars.
Complete 100 quests.
Gather 2500 items.
Adopt a pet.
Harvest 2500 crops.
Mine 3500 ores.
Chop 6000 trees.
Catch 1000 fish.
Catch 1000 bugs.
Sell 1500 items.
Chop 3500 trees.
Catch 500 fish.
Catch 500 bugs.
Craft 2500 items.
Harvest 1000 crops.
Catch 250 bugs.
Mine 1500 ores.
Gather 1000 items.
Catch 250 fish.
Harvest 500 crops.
Chop 1500 trees.
Sell 700 items.
Complete 50 quests.
Meet 15 Townsfolk.
Gather 500 items.
Mine 750 ores.
Catch 100 fish.
Craft 1000 items.
Sell 300 items.
Complete 25 quests.
Chop 750 trees.
Craft 500 items.
Complete 10 quests.
Harvest 100 crops.
Meet 12 Townsfolk.
Catch 100 bugs.
Craft 250 items.
Meet 10 Townsfolk.
Gather 100 items.
Sell 50 items.
Sell 100 items.
Chop 150 trees.
Mine 150 ores.
Craft 100 items.
Meet 5 Townsfolk.
Meet 3 Townsfolk.