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
Unlock 50 chapters in the encyclopedia
Fill the whole map
Get 10 orange items in exchange for the trophies in camp
Craft 25 items
Dismantle 10 items
Dismantle 5 items
Defeat the Hunter
Synthesize 5 resource with alchemy
Build all the possible camp structures
Transmute 5 resources into hydrogen
Find all possible types of resources
Build the river
Defeat the Priestess 3 times
Dismantle a camp structure
Embark on your fiftieth expedition
Unlock a chapter in the encyclopedia
Read 50 different dialogues
Defeat the Lich 3 times
Die ten times
Complete 100 loops
Craft 5 items
Get 5 camp items
Lose 100 resources
Defeat the Priestess
Unlock the ^Necromancer^ class
Unlock the ^Rogue^ class
Drink 50 potions
Place 1000 cards
Kill 1000 enemies
Embark on your tenth expedition
Find 100 resources
Defeat the Lich
Die first time
Build the first camp structure
Kill 5 enemies
Embark on your first expedition
Kill each enemy
Get all the camp items
Synthesize 100 resources
Transmute 50 resources into hydrogen
Unlock all the encyclopedia
See all the possible tiles
Die outside of battle
Defeat the hunter 3 times
Defeat Omega 6 times
Die and resurrect 3 times in one expedition
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^