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