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