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