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