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