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