This is probably the best-looking and best-playing game so far, but I ran into a bug that crashed not just the game, but my whole computer. After I died the first time and went back out to the title screen, hitting start brought me to a solid blue screen, which sent me back to the title screen if I clicked anything. I tried hitting "Story" again, and the game hung, then when Windows tried to close it my whole computer froze and crashed.
It's too bad, I was enjoying myself. One question... does where the mouse is pointing effect which direction you swing? I kept swinging in the wrong direction, and it was only right before I died that I thought to move my mouse to the other side of the character, but I died almost immediately. I also had a slight problem understanding that my character was taking damage... I thought I made it through the whole level without taking damage, but when I looked at my heath bar it was almost completely depleted.
I'm assuming "Energize" does something later in the game... I only just made it to the second wave and it never did anything up to that point.