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