I bought the game to mess around with it since steam allows a 14 day return. I wasn't really able to play it because my computer is not good enough, but also even with voice attacking it would have been difficult. It's hard because you need to have the right click held down almost the entire time in order to control the camera. So imagine the controls as WASD to move, the lleft-mouse cursor to click around, and then the right-mouse to see what you are doing. A little bit too complicated for voice attack IMO, but I am VERY new to it. Someone else probably knows better.