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