Even if the mouse and keyboard worked better, the controller still has the best possible mapping. I know some PC gamers are averse to controllers, but this game is designed for one.
Once that was fixed, it runs like a charm. I had a hard time getting the game to recognize mine, but it turned out it was a driver issue. Whatever you do, if you play this game on PC, shell out the extra money for an Xbox 360 (wired) controller.
I know that From said the mouse and keyboard would be bad, but I didn't expect that it would be this bad.
The hunter build gets you a bow early on and good average stats.