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