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