Started playing this today. It took me a little while to get the hang of mapping the controls, and for a while I couldn't fire by using the left mouse button, though that's sorted now. I wanted to play this with kb + m as I found the pad on the 360 version too 'floaty' for shooting, which is unsurprising. Here's hoping I find it worth it. Despite its flaws I always thought it had some redeeming features.