1. Right-click on the "Vampire - The Masquerade Bloodlines" icon on the desktop.
Click "Properties"

2. Add the "-console" in the end of the "Target" field. Apply ---> OK

3. double click to enter the game,press "~" key to enable the console,and then enter these codes:

"godmode" -- enable the godmode
"give" -- give weapons and some stuffs,press "up" and "down" key on your keyboard to choose a command you want.