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