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
Die outside of battle
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 and resurrect 3 times in one expedition
Unlock all the encyclopedia
Get all the camp items
Defeat Omega
Kill each enemy
See all the possible tiles
Get 10 orange items in exchange for the trophies in camp
Craft 25 items
Synthesize 100 resources
Defeat the hunter 3 times
Transmute 50 resources into hydrogen
Synthesize 5 resource with alchemy
Transmute 5 resources into hydrogen
Build all the possible camp structures
Defeat the Hunter
Find all possible types of resources
Fill the whole map
Defeat the Priestess 3 times
Build the river
Embark on your fiftieth expedition
Defeat the Priestess
Unlock 50 chapters in the encyclopedia
Defeat the Lich 3 times
Read 50 different dialogues
Unlock a chapter in the encyclopedia
Dismantle 10 items
Craft 5 items
Die ten times
Dismantle 5 items
Lose 100 resources
Drink 50 potions
Dismantle a camp structure
Unlock the ^Necromancer^ class
Get 5 camp items
Complete 100 loops
Place 1000 cards
Kill 1000 enemies
Unlock the ^Rogue^ class
Embark on your tenth expedition
Embark on your first expedition
Die first time
Kill 5 enemies
Find 100 resources
Build the first camp structure
Defeat the Lich