Here is the full list of all 50 Loop Hero achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Defeat Omega
Get all the camp items
Defeat the Hunter
Die and resurrect 3 times in one expedition
Synthesize 100 resources
Craft 25 items
Synthesize 5 resource with alchemy
Dismantle a camp structure
Transmute 50 resources into hydrogen
Transmute 5 resources into hydrogen
Build all the possible camp structures
Find all possible types of resources
Die outside of battle
Unlock 50 chapters in the encyclopedia
Defeat the Priestess 3 times
Craft 5 items
Dismantle 10 items
Get 10 orange items in exchange for the trophies in camp
Embark on your fiftieth expedition
Read 50 different dialogues
Build the river
Defeat the Priestess
Dismantle 5 items
Unlock a chapter in the encyclopedia
Fill the whole map
Defeat the Lich 3 times
Get 5 camp items
Unlock the ^Necromancer^ class
Lose 100 resources
Complete 100 loops
Unlock the ^Rogue^ class
Die ten times
Place 1000 cards
Find 100 resources
Drink 50 potions
Defeat the Lich
Kill 1000 enemies
Embark on your tenth expedition
Die first time
Build the first camp structure
Kill 5 enemies
Embark on your first expedition
Kill each enemy
Unlock all the encyclopedia
See all the possible tiles
Defeat the hunter 3 times
Defeat Omega 6 times
Have 10 living skeletons in one battle
Defeat the boss in the first expedition
Place 10 cards you didn't have in your deck, not counting ^Oblivion^