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