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