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