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