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