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