Cheat Mode:
Start the game with the "wizardmaster" command line parameter to unlock a cheat option at the inventory screen. Here's an easy way of doing this: Create a Shortcut to the game on your Desktop. Right click on it, go to properties. You will see something like: c:\****\****exe. Just add wizardmaster to the end of this command line and then click Apply. Now start the game.

Infinite Saves:
When leaving the manor's lobby as Carnby, a FMV sequence will play when you meet Edenshaw. In the sequence, he will give you a charm of saving. Immediately save the game when the FMV sequence completes. Keep saving the game repeatedly to get four save uses each time.

Thanks to Revolution reader Leon "Scrambeld" vd Geest!