Here is the full list of all 26 Conarium achievements.
Finish the game with 100% progress.
Die in five different ways.
Get all trophy items in the game.
Solve the puzzle on the cellar door without any clues.
Use the walkietalkie voluntarily, in every location that it is available.
Get all secrets in the game.
Solve the radio room puzzle.
Find all documents in the game.
Examine all objects in the game.
Experience the first ending.
Get all notebook drawings in the game.
Finish the game without dying.
Experience the second ending.
Reach the final level.
Reach the ruins under Rub'al Khali.
Check all the wooden masks in the mansion.
Examine all the notes and diagrams in the game.
Reach the Mansion for the second time.
Don't get caught by the mummies in the Connection halls.
Reach the Connection halls.
Solve the symbol drawing puzzle at the first try.
Check all the books in the base and the mansion.
Get on the submarine.
Manage to run the Link Elevator.
Provide electricity to the base.
Walk out of opposite sides of the map outside the base.