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