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