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