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