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