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