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