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