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