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