Here is the full list of all 103 Forager achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Achieve every other feat
Find every secret room
Die 10 times
Have 1,000,000 coins
Complete every museum bundle
Open all big treasure chests
Collect every seal
Complete the museum Archaeology bundle
Build on top of every water tile
Use a bottled rainbow
Shoot 100 arrows
Have 3 bombs active at once
Perform a challenging blood ritual
Collect every tool and weapon
Complete the Skull Maze
Solve the Frozen Galaxy puzzle
Solve the Skull Galaxy puzzle
Complete the Crystal Cave
Find 3 secret rooms
Solve the Fire Galaxy puzzle
Complete the Fire Temple
Solve the Ancient Galaxy puzzle
Learn every skill
Complete every NPC quest
Build 200 structures
Collect every accessory
Complete the museum Cooking bundle
Help the Fox
Complete the museum Alchemy bundle
Bottle 100 critters
Collect every artifact
Talk to every NPC
Help the Engineer
Buy every land
Have 100,000 coins
Complete the museum Mining bundle
Help the Wizard
Dodge 10 attacks
Complete the museum Trapping bundle
Dig up an archaeology item
Have 100 poop in your inventory
Win the jackpot at a slot machine
Kill an enemy with a single arrow shot
Open 20 big treasure chests
Complete the museum Building bundle
Mine the giant crystal
Complete the museum Foraging bundle
Help the Ghost
Kill a magic deer
Kill 3 enemies or more with a single sword slash
Craft 10,000 items
Activate a droid
Complete the museum Farming bundle
Eat a gem
Win the ice wizard challenge
Help the Princess
Craft 2,000 coins
Gather royal steel or royal clothing
Have 5,000 items in your inventory
Fail miserably at a trivia minigame
Have 10 max health
Open a skull chest
Destroy 100 gravestones
Complete the Ancient Tomb
Complete a dungeon without taking damage
Help the Goblin
Dodge a lethal attack
Own 10 lands and 5,000 coins
Help the Old Man
Water 100 seeds
Plant 100 seeds
Help the Fairy Queen
Dig up 50 items
Have 1,000 items in your inventory
Play the game for 3 hours
Craft 500 furnace items
Help the Druid
Catch 50 fish
Build 20 structures
Kill 100 enemies
Have 100 jelly in your inventory
Kill all giant beets
Have one of each gem in your inventory
Own 5 lands
Reach Void level 5
Reach Void level 10
Reach Void level 20
Reach Void level 30
Light all torches in the Skull Maze
Get a Void gear item
Get a Cosmic gear item
Obtain a sigil
Defeat the Slime King
Defeat the Skeleton King
Defeat the Dark Beet
Make 1 million coins using banks
Upgrade all rods
Have 1,000,000,000 coins
Have 1,000,000,000,000 coins
Defeat the Toxic Guardian
Obtain a Nuclear tier item
Upgrade a structure to use nuclear power
Own 100 nuclear structures at once