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