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