Here is the full list of all 97 Cornucopia achievements.
Discover the Old Mines
Complete a Card Quest
Refine 10 Times
Open 25 Card Packs
Open 10 Card Packs
Meet 15 NPCs
Harvest your first Berry Bush
Decorate your Home for the First Time
Plant your first Seed
Give your first Gift
Open your first Letter
Bomb an NPC
Steam Train was Spotted
Earn $10,000
Earn $100,000
Earn $500,000
Earn $1,000,000
Fat Cat Earn $10,000,000
Play All of the Arcade Games
Win All of the Arcade Games
Earn 100 Arcade Tickets
Earn 1,000 Arcade Tickets
Use a Vending Machine
Meet All the NPCs (Talk to all NPCs)
Reach Heart Level 5 with an NPC
Reach Heart Level 10 with an NPC
Reach Heart Level 5 with 10 NPCs
Reach Heart Level 5 with 25 NPCs
Reach Heart Level 10 with 25 NPCs
Find Out 10 NPCs Favorite Gifts
Find Out Someone's Favorite Gift
Unlock 10 Cooking Recipes
Unlock 50 Cooking Recipes
Unlock 100 Cooking Recipes
Unlock 200 Cooking Recipes
Whip Up Your First Dish
Cook 10 Cooking Recipes
Cook 100 Cooking Recipes
Prepare 25 Different Dishes
Upgrade your House
Fully Upgrade your House
Breed a Cow
Hatch a Chick
Open 100 Card Packs
Complete 15 Card Quests
Catch 10 Fish
Catch 25 Fish
Catch 500 Fish
Catch 150 Fish
Reel-in 10 Treasure Chests
Defeat the Spider Boss
Defeat the Ogre Boss
Defeat the Lava Crab Boss
Defeat the Slime Boss
Defeat the Squid Boss
Harvest your first Vegetable
Harvest your first Fruit Tree
Ship 10 Fruits/Berries
Ship 10 Crops
Ship 250 Crops
Ship 250 Fruits/Berries
Start Dating
Get Married
Have a Baby
Reach Level 5 in a Skill
Reach Level 10 in a Skill
Reach Level 3 in All Skills
Reach Level 10 in 5 Skills
Win A Race
Win 10 Races
Win 50 Races
Craft an Item
Craft Items 25 Times
Refine 100 Times
Kill 10 Enemies
Kill 50 Enemies
Kill 1000 Enemies
Kill 250 Enemies
Restore the Cornucopia
Attend Every Festival
Win the Cooking Contest
Win an Auction
Sell at an Auction
Try Every Scratch Card
Bomb NPCS 25 Times
Unlock all the Backpack Slots
Breed 10 Animals
Upgrade your Barn
Upgrade your Chicken Coop
Breed every kind of Animal
Feed Munger 90 Days in a Row
Feed Munger for the First Time
Brush an Animal
Get Stuck in the Waterwheel
Catch your first Fish
Catch your first Large Fish
Pass out from Exhaustion