Note: Access to the expansion Cagliostro's Secrets is restricted until you have progressed past a certain point in the main story. You must have completed the level "Bastille" to gain access to the new content.In this new quest, you find yourself embroiled in a gripping story involving the King's agent, the Comte de Cagliostro. No one will return unscathed after exploring Hôpital Saint Louis – a new area whose secrets have been hidden by Louis XVI.On this dark adventure, where you must outwit Cagliostro's Mesmer-inspired machinery, you will encounter new enemies and unlock new weapons and costumes. Are you ready to discover the shocking truth about the alchemy that powers the King's automatons?

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 "LIBRARY" tab and start downloading.