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.
Visit the Edge of Solemn.
Donate all items to Museum.
Catch 2500 fish.
Complete 150 quests.
Complete all Personal Goals.
Catch 2500 bugs.
Harvest 4000 crops.
Chop 6000 trees.
Gather 4000 items.
Discover All Tavern Recipes.
Get Married.
Adopt a pet.
Mine 6000 ores.
Complete 100 quests.
Unlock all town wishes.
Unlock all ultimate upgrades at the Crafting Workshop.
Harvest 2500 crops.
Craft 2500 items.
Gather 2500 items.
Chop 3500 trees.
Catch 1000 fish.
Complete 50 quests.
Upgrade all structures and areas to 10 stars.
Harvest 1000 crops.
Sell 1500 items.
Mine 3500 ores.
Meet 15 Townsfolk.
Catch 1000 bugs.
Gather 1000 items.
Complete 25 quests.
Chop 1500 trees.
Harvest 500 crops.
Meet 12 Townsfolk.
Craft 1000 items.
Catch 500 fish.
Catch 500 bugs.
Sell 700 items.
Gather 500 items.
Meet 10 Townsfolk.
Complete 10 quests.
Mine 1500 ores.
Catch 250 fish.
Chop 750 trees.
Craft 500 items.
Sell 50 items.
Sell 100 items.
Sell 300 items.
Catch 250 bugs.
Mine 750 ores.
Catch 100 fish.
Craft 250 items.
Harvest 100 crops.
Catch 100 bugs.
Gather 100 items.
Craft 100 items.
Mine 150 ores.
Chop 150 trees.
Meet 5 Townsfolk.
Meet 3 Townsfolk.