Go to the configurator, Run as admin (Vista/Win7) go to input at the bottom change from Xbox controller to Keyboard, save and quit.
It will show keyboard buttons instead of Xbox. YOU MUST RUN AS ADMIN otherwise it will not work.
Worked for me. However I still Rage quit the game, I found it annoying and overly complicated in its controls.
I gotta agree with you here. The default control scheme stinks to high heaven. It has the feel of a straight up port with some keyboard controls slapped on, which alone feels like they've been concocted by someone who doesn't play on a PC very often.
Hell, the fact that they released it on Steam and used Shift+TAB to bring up the in-game menu is bafcheathappens on its own. I know you can change keys, but come on.
It's clearly been ported with the use of a controller as the primary method of play. I think it'll take me a while to finish this one, I hate playing this type of game with a controller.