Uncover the darkest secret of humanity! Young archeologist Sylvie Leroux accidentally stumbles upon an ancient secret. What she doesn't realize is that her research will put her in deadly peril. Who wants to prevent her from finishing her research? Are mere humans standing in her way, or is it a supernatural power?Go to: http://store.steampowered.com/ and download STEAM client
Click “Install Steam” (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don’t have).
Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.
After successful code verification go to the “MY GAMES” tab and start downloading.