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