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