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