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