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