same problem here, I use ps3 controller + better DS3 to simulate xbox 360 controller, but not work.
now I use key mapping program to map my ps3 controller as keyboard; but in this way only can play for 1 player.
So the game have an option to use xbox 360 controller?
yes, it seems designed for xbox 360 controller, and no key binds for game pad.
if my guess is right, it's a xinput vs direct_input support issue. some game have this issue.